★ SOSA · one oil, one level, different machines
A signature scent is a standard, not a consumable — and before a practice builds one across three buildings it has to settle a supply question that SOSA has not published an answer to
★ ★ ★ ★ ★
★★★★★
"One oil, one level, three different machines. Put that way, the plan stopped being an argument between our three managers."
group owner · one oil, three machines
★★★★★
"We asked about bulk terms and were told plainly that none are published. I would rather hear that than be quoted something invented."
operations head · asked, and got a straight answer
★★★★★
"Our third site has a ducted system and the other two have splits. Being told the machine may differ was a relief, not a compromise."
group clinical director · different buildings, same level
★★★★★
"The single-page site card is now in all three receptions. Same composition, same setting, one named person each."
group manager · one card per site
★★★★★
"Confirming refill availability in writing before we standardised was the advice that mattered most. We would have found out in month four."
practice owner · supply before standard
★★★★★
"Our smallest branch runs one bottle at two reeds and it belongs to the same family as the big one. Identity is the level, not the hardware."
centre manager · identity is the level
★★★★★
"One oil, one level, three different machines. Put that way, the plan stopped being an argument between our three managers."
group owner · one oil, three machines
★★★★★
"We asked about bulk terms and were told plainly that none are published. I would rather hear that than be quoted something invented."
operations head · asked, and got a straight answer
★★★★★
"Our third site has a ducted system and the other two have splits. Being told the machine may differ was a relief, not a compromise."
group clinical director · different buildings, same level
★★★★★
"The single-page site card is now in all three receptions. Same composition, same setting, one named person each."
group manager · one card per site
★★★★★
"Confirming refill availability in writing before we standardised was the advice that mattered most. We would have found out in month four."
practice owner · supply before standard
★★★★★
"Our smallest branch runs one bottle at two reeds and it belongs to the same family as the big one. Identity is the level, not the hardware."
centre manager · identity is the level
Sukoon ₹1,899 
Vaayu ₹11,999 
Mountain Breeze ₹849 
Hotel Collection 300ml ₹1,799 
Reed oil refill 500ml ₹3,499
★ ★ The standard machine for most branches ₹1,899 Only where one public volume passes 320 sq ft ₹11,999
✓ Identity is one composition at one intensity — the machine should be sized to each building, not repeated across all three ✓ SOSA publishes no bulk pricing, corporate account, AMC, installation, warranty term, lead time or multi-site programme — ask before committing ✓ Free shipping above ₹499 · a portion of every order funds girl-child education
Founder Diaries · Eye Clinic Scenting · Three Sites, One Identity
Measure each arrival zone separately. Under 150 sq ft: a reed diffuser ₹749–₹1,349. 150–320 sq ft: Sukoon ₹1,899. Past 320 sq ft on one connected path: Vaayu ₹11,999, freestanding.
Settle supply before you standardise. There is no separate Vaayu cold-air refill oil on sale at the time of writing; the 400ml in the box lasts roughly 90+ days and is the whole supply. The water-based Hotel Collection is never a substitute.
Expect no commercial framework, because none is published. No bulk pricing, no slab, no corporate account, no AMC, no installation, no stated warranty term, no lead time, no multi-site programme. Ask, in writing, and assume none of it exists until told otherwise.
Mountain Breeze 50ml₹849 · the compact branchTwo failure modes, both expensive, and I see each about equally often. The first is standardising upward: buying the machine that suits the largest branch and installing it in all three. In the small branch that means running an ₹11,999 unit at the bottom of its range to avoid overdosing a room a fraction of its rated size, which is a poor use of roughly ₹10,100 and no better a result than a ₹1,899 machine would give. The second is standardising downward: buying what suits the smallest branch and finding the large one uneven, then adding a second and a third source and producing pockets and overlaps instead of a held volume. Both come from treating the appliance as the standard. Setting numbers do not travel either: "level two" on one machine is not "level two" on another, and even the same model behaves differently in a room with a fresh-air intake than in a sealed one. And the air systems will differ — split units in one branch, a ducted system in another — which changes where the source stands rather than what it is. In the ducted branch specifically, walk the return grilles with a tissue before choosing a position, and put nothing whatever into the ductwork.
Mountain Breeze · under 150 sq ft₹849Shop → Sukoon · 150–320 sq ft₹1,899Shop → 
Vaayu · past 320 sq ft, freestanding₹11,999Shop →
SOSA range, specifications and prices used in this guide (verified August 2026): Vaayu ₹11,999 — waterless cold-air nebulisation of undiluted fragrance oil; no water, no heat, no added humidity, no white mineral dust. Coverage up to 1000 m³, about 2,000–3,000 sq ft. 400ml refillable tank lasting roughly 90+ days at a mid setting. Bluetooth app plus onboard controls, 1h / 4h / 8h / 24h run windows, day selection, adjustable intensity, auto-stop and key-lock. Under 38 dB. DC 12V / 1A, 5W. Freestanding or wall / HVAC mount. CE, RoHS and SGS certified. SOSA does not currently sell a separate Vaayu cold-air refill oil; the 400ml supplied in the box is the fragrance available at the time of writing, so a practice planning continuous or multi-site use should confirm current refill availability with SOSA before committing. The water-based Hotel Collection is made for ultrasonic machines and must not be used in a Vaayu. Other machines: Boond 300ml ₹899 (~150 sq ft, ultrasonic) · Sukoon 500ml ₹1,899 (270–320 sq ft, 16–18 hours on low, remote and steady/2H/4H timers, three 15ml fragrances included, ultrasonic) · Megh 6L ₹3,499 (~215 sq ft — a runtime and humidity machine that covers less than a Sukoon, never a coverage upgrade) · Safar ₹3,999 (waterless cold diffusion, cordless, 20ml, about 6.9cm, three speeds, 1/2/3-hour auto-off — sold as a car and travel diffuser, personal-scale only; SOSA publishes no coverage figure for it) · Aangan ₹25,999 (HVAC nebulising, ~8,000–10,000 sq ft) · Meenar ₹38,500 (commercial HVAC, 12,000–18,000 sq ft). Water-based Hotel Collection for ultrasonic machines: 15ml ₹299 · 100ml ₹999 · 300ml ₹1,799 · pack of seven ₹1,799; scents are inspired by the atmosphere of well-known hotels — SOSA is an independent Indian brand and is not affiliated with, endorsed by or supplying any hotel group. Reed diffusers ₹749–₹1,349 (50ml 6–8 weeks, 130ml 14–18 weeks, six fibre reeds, no 100ml size; replacement reeds are not sold separately). Reed oil cannot be used in an ultrasonic machine and Hotel Collection oil cannot be used in reeds. SOSA sells no room spray or home spray — every SOSA spray is a car perfume. Nothing in this guide is medical, clinical or safety advice. A fragrance diffuser adds a scent to the air. It does not clean, purify, filter, sanitise or disinfect air, does not remove or neutralise disinfectant, damp or occupancy smells, and has no effect on comfort, anxiety, waiting time, recovery or any clinical outcome. Some people are sensitive to airborne fragrance, which is why this guide recommends that examination rooms, diagnostic areas, consultation cabins, procedure suites and post-operative areas remain fragrance-free, that a fragrance-free seating option always exist, and that a diffuser is never mounted into shared HVAC in a clinical building. Decisions about clinical policy, ventilation standards, infection control and patient suitability rest entirely with the practice and its clinicians. A persistent stale, damp or disinfectant smell is a ventilation, moisture or cleaning problem — SOSA sells no dehumidifier and no air purifier, and fragrance should never be used to cover one. Coverage, runtime and longevity figures are manufacturer specifications and typical ranges, not guarantees, and vary with room volume, ceiling height, air exchange, occupancy and season. SOSA publishes no commercial or bulk pricing, no corporate account, no annual maintenance contract, no installation service, no stated warranty term and no multi-location programme; warranty length, spare parts, servicing and app platform availability are unconfirmed, and larger or multi-site enquiries should go through the contact page before any commitment. Composed and made in small batches in Pune, India. Free shipping above ₹499. A portion of every order supports girl-child education through Nanhi Kali. Prices subject to change — see the live product pages.
The instinct behind this question is to standardise the hardware, and it is the one thing you should not standardise. What makes three buildings smell like one practice is a single composition held at a single low intensity. What delivers that in a 140 sq ft reception is not what delivers it in a 380 sq ft open waiting hall, so the machines should differ site by site while the oil and the target level stay fixed. Identity is the level, not the equipment. Before any of that, though, there is a question you have to answer first, and it is commercial rather than aesthetic: a practice adopting a scent across three sites is adopting a standard rather than buying a consumable, and standards need supply. SOSA does not currently sell a separate Vaayu cold-air refill oil, and publishes no bulk or commercial pricing, no corporate account, no maintenance contract, no installation service, no stated warranty term, no lead time and no multi-location programme. Ask through the contact page and get the answers in writing before you build brand language on top of a fragrance. And in every branch, the clinical pathway stays fragrance-free.
Quick answers — read this first
Standardise the oil and the level; vary the machine. One composition, one intensity target, one placement rule — and then a reed diffuser, a Sukoon or a Vaayu depending on what each arrival zone measures.Measure each arrival zone separately. Under 150 sq ft: a reed diffuser ₹749–₹1,349. 150–320 sq ft: Sukoon ₹1,899. Past 320 sq ft on one connected path: Vaayu ₹11,999, freestanding.
Settle supply before you standardise. There is no separate Vaayu cold-air refill oil on sale at the time of writing; the 400ml in the box lasts roughly 90+ days and is the whole supply. The water-based Hotel Collection is never a substitute.
Expect no commercial framework, because none is published. No bulk pricing, no slab, no corporate account, no AMC, no installation, no stated warranty term, no lead time, no multi-site programme. Ask, in writing, and assume none of it exists until told otherwise.
The short answer
Short answer: pick one composition, define one intensity target and one placement rule, write them on a single card, and then let each branch use whatever hardware its arrival zone actually needs. Three sites will very often mean three different products — a bottle in the compact one, a Sukoon in the middle one, possibly a Vaayu in the largest — and that is the correct outcome rather than a compromise.
Why standardising the machine fails: a machine sized for your largest reception is oversized for your smallest, and running it at its lowest setting to avoid overdosing a small room is a poor use of money and no better a result. Meanwhile a machine sized for the smallest cannot hold the largest. The one variable that genuinely travels is the composition.
Where to shop, if anything: size each branch on its own arrival zone — Mountain Breeze ₹849, Sukoon ₹1,899, Vaayu ₹11,999 — and ask about supply first. Free shipping above ₹499.
In this guide
The likely standard for most branches: 150–320 sq ft, dosed low, remote at the desk
Sukoon 500ml · ₹1,899
Only in the branch whose public volume passes 320 sq ft — and only freestanding
Vaayu waterless · ₹11,999
The compact branch: same composition, two of six reeds, silent and unadjustable
Mountain Breeze · ₹849 / 50ml
How do I create one signature scent across three eye clinics of different sizes?
Straight answer
1. Answer the supply question before you design anything. SOSA does not currently sell a separate Vaayu cold-air refill oil. The 400ml supplied in the box lasts roughly 90+ days — 400 ÷ 90 = 4.4ml a day at a mid setting — and is the whole supply available at the time of writing. A home buyer finds that inconvenient; a group that has taught three receptions and a returning patient population to associate one scent with its name finds it a business problem. Ask through the contact page, get the answer in writing, and never treat the water-based Hotel Collection as a substitute.
2. Standardise one composition, and only one. Two compositions across a group is not an identity, it is two identities; and two in one building meet somewhere and produce a third that neither of them is. Choose a dry, low-sweetness composition, because dryness is what lets a scent sit at a clinic-appropriate level without becoming nameable.
3. Standardise the intensity target, not the setting number. "Lowest setting" means different things on different machines. What travels is the outcome: a colleague who has been outside for fifteen minutes, entering through the patient door at four in the afternoon, should notice the room is pleasant and be unable to name a fragrance. If they can name it, it is too strong — in every branch.
4. Let the hardware differ, deliberately. Measure each arrival zone — reception plus waiting plus any bay sharing unbroken air, with the doors as they sit at eleven on a clinic morning. Under 150 sq ft: a reed diffuser. 150–320: Sukoon ₹1,899. Past 320 on one path: Vaayu ₹11,999. 3,000+ sq ft of connected public area: Aangan ₹25,999, above that Meenar ₹38,500. And a Megh at ₹3,499 covers about 215 sq ft — less than a Sukoon — so it is never the coverage step up between branches.
5. Standardise the placement rule, which costs nothing and travels perfectly. One source, at the end of the arrival zone furthest from the corridor to consultation, at waist to chest height, clear of every air-conditioning return grille, out of the direct throw of a supply diffuser, never in a corridor and never in a clinical room.
6. Standardise the governance. One named person per site who owns the level; unconditional authority for anyone on that desk to switch it off; run windows covering clinic hours only, so nothing runs overnight or during cleaning; and a quarterly cold-nose check written down. Across three sites, governance is what stops three different rooms emerging from one specification.
7. Accept that the AC systems will differ, and that this changes placement rather than product. A branch on individual split units is a doors-and-distance problem. A branch on a ducted central system is a returns-and-distance problem — and in that branch above all, nothing goes into the ductwork, because a central system serves consultation and testing rooms in the same breath as reception.
8. And the conditions that hold in all three buildings. The clinical pathway stays fragrance-free — examination rooms, diagnostics, consultation cabins, procedure suites and post-operative areas take nothing in any format at any level at any hour. A genuine fragrance-free seat exists in each reception. Nothing here is medical, clinical, ventilation, air-handling, infection-control, accreditation or regulatory advice; all of that belongs to your own clinicians and licensed contractors. Composed and made in small batches in Pune, and a portion of every order supports girl-child education through Nanhi Kali.
2. Standardise one composition, and only one. Two compositions across a group is not an identity, it is two identities; and two in one building meet somewhere and produce a third that neither of them is. Choose a dry, low-sweetness composition, because dryness is what lets a scent sit at a clinic-appropriate level without becoming nameable.
3. Standardise the intensity target, not the setting number. "Lowest setting" means different things on different machines. What travels is the outcome: a colleague who has been outside for fifteen minutes, entering through the patient door at four in the afternoon, should notice the room is pleasant and be unable to name a fragrance. If they can name it, it is too strong — in every branch.
4. Let the hardware differ, deliberately. Measure each arrival zone — reception plus waiting plus any bay sharing unbroken air, with the doors as they sit at eleven on a clinic morning. Under 150 sq ft: a reed diffuser. 150–320: Sukoon ₹1,899. Past 320 on one path: Vaayu ₹11,999. 3,000+ sq ft of connected public area: Aangan ₹25,999, above that Meenar ₹38,500. And a Megh at ₹3,499 covers about 215 sq ft — less than a Sukoon — so it is never the coverage step up between branches.
5. Standardise the placement rule, which costs nothing and travels perfectly. One source, at the end of the arrival zone furthest from the corridor to consultation, at waist to chest height, clear of every air-conditioning return grille, out of the direct throw of a supply diffuser, never in a corridor and never in a clinical room.
6. Standardise the governance. One named person per site who owns the level; unconditional authority for anyone on that desk to switch it off; run windows covering clinic hours only, so nothing runs overnight or during cleaning; and a quarterly cold-nose check written down. Across three sites, governance is what stops three different rooms emerging from one specification.
7. Accept that the AC systems will differ, and that this changes placement rather than product. A branch on individual split units is a doors-and-distance problem. A branch on a ducted central system is a returns-and-distance problem — and in that branch above all, nothing goes into the ductwork, because a central system serves consultation and testing rooms in the same breath as reception.
8. And the conditions that hold in all three buildings. The clinical pathway stays fragrance-free — examination rooms, diagnostics, consultation cabins, procedure suites and post-operative areas take nothing in any format at any level at any hour. A genuine fragrance-free seat exists in each reception. Nothing here is medical, clinical, ventilation, air-handling, infection-control, accreditation or regulatory advice; all of that belongs to your own clinicians and licensed contractors. Composed and made in small batches in Pune, and a portion of every order supports girl-child education through Nanhi Kali.
TL;DR: one composition, one intensity target, one placement rule, one governance model — and different machines in different buildings, sized to each arrival zone rather than repeated. Settle supply in writing before you standardise, because there is no separate Vaayu refill oil currently sold and no published bulk pricing, corporate account, AMC, installation, warranty term, lead time or multi-site programme. Never put anything in the ductwork of the branch with central air conditioning.
The machine most branches will end up with, and why that is fine
SOSA Sukoon · 500ml ultrasonic, remote, steady / 2H / 4H ₹1,899
Rated 270–320 sq ft, 16–18 hours on the low setting, remote plus steady, 2H and 4H timer modes, three 15ml Hotel Collection scents in the box. Across a group of three eye clinics, the arrival zones usually land between 150 and 320 sq ft in at least two of them, which makes this the de facto standard machine — and standardising on it where it fits is sensible, because staff who move between branches then meet the same controls. The remote is the feature a group values most: whoever is on the desk at any site can drop the level or stop it without leaving the counter and without ringing a head office. Use the 2H and 4H timers rather than steady, so no branch is running through its cleaning shift; fragrance layered over cleaning chemistry produces a third smell that is worse than either. Dose light — fewer drops in the same volume of water — and set the same dose everywhere so the group has one number to audit. Two honest limits. It is ultrasonic, so it adds humidity, which matters more in your coastal branch than your inland one. And it has no key-lock, so if a level creeping upward across a season with several people on the desk is your real problem, that is an argument for the tier above at the branch where it applies — an argument about control, not coverage. Machine plus a 300ml is ₹1,899 + ₹1,799 = ₹3,698.
Part one — what travels between sites and what does not
A multi-site scent programme fails in a predictable way: the group standardises the thing that is easy to specify — the equipment — and lets the thing that actually creates identity drift. Three properties travel perfectly, three do not travel at all, and knowing which is which is most of the job.
1
WHAT TRAVELS · THE COMPOSITION, THE TARGET AND THE RULE
Identity is carried by one oil at one intensity in one relative position, and all three are free to replicate
People recognise a building by what it smells of and how much of it there is, not by which appliance produced it. So the three things to write down and repeat exactly are the composition, the intensity target expressed as an outcome rather than a dial setting, and the placement rule expressed relative to the building rather than in metres. The composition should be dry and low in sweetness, because a dry profile can sit at a clinic-appropriate level while still reading as considered — warmth and sweetness are the qualities that make a fragrance nameable, and a patient who can name your reception's scent has been given something to think about that is not why they came. The intensity target is an outcome test: a colleague with a genuinely cold nose, entering through the patient door at four in the afternoon, notices the room is pleasant and cannot name what is in it. That test works identically in all three buildings, which is exactly why it is the standard rather than a number. And the placement rule — furthest point from the corridor to consultation, waist to chest height, clear of returns, out of supply throws, never in a corridor or a clinical room — is a sentence that any manager can apply to any floor plan without consulting anybody.
Write these three on one card per site: the composition, the four-o'clock outcome test, and the placement rule. Nothing else needs to be identical.
2
WHAT DOES NOT TRAVEL · THE MACHINE, THE SETTING NUMBER AND THE AIR SYSTEM
Three buildings will need three different pieces of hardware, and forcing one on all three costs money and results
Mountain Breeze 50ml₹849 · the compact branchTwo failure modes, both expensive, and I see each about equally often. The first is standardising upward: buying the machine that suits the largest branch and installing it in all three. In the small branch that means running an ₹11,999 unit at the bottom of its range to avoid overdosing a room a fraction of its rated size, which is a poor use of roughly ₹10,100 and no better a result than a ₹1,899 machine would give. The second is standardising downward: buying what suits the smallest branch and finding the large one uneven, then adding a second and a third source and producing pockets and overlaps instead of a held volume. Both come from treating the appliance as the standard. Setting numbers do not travel either: "level two" on one machine is not "level two" on another, and even the same model behaves differently in a room with a fresh-air intake than in a sealed one. And the air systems will differ — split units in one branch, a ducted system in another — which changes where the source stands rather than what it is. In the ducted branch specifically, walk the return grilles with a tissue before choosing a position, and put nothing whatever into the ductwork.
The rule: size every branch on its own measured arrival zone. Three sites will often mean three different products, and that is correct.
3
THE THING THAT DRIFTS · GOVERNANCE, AND WHY THREE SITES NEED IT MORE THAN ONE
Without a named owner per site, one specification becomes three different rooms within two seasons
Adaptation is the mechanism that undoes multi-site consistency, and it is entirely predictable. Everybody's nose stops registering a constant within minutes and adapts hardest where they spend the day, so every person working a desk will eventually decide their reception has gone flat — and the correction is always upward, because nobody ever notices a level they have adapted to and lowers it. One site with one manager drifts slowly; three sites with six people drift independently, and after two seasons you have three rooms that no longer belong to the same practice. The remedy is administrative rather than technical and costs nothing: one named person per site who owns the level and is the only person permitted to raise it; unconditional authority for anybody on that desk to lower it or switch it off, which is a different permission entirely; a quarterly cold-nose check with the sentence written down and sent to whoever holds the standard; and a group review once a year in which the three cards are compared. Where a branch has a machine with a key-lock, use it — the lock exists to stop the level being raised, never to stop it being stopped. And ask the desk teams at each site the open question twice a year: if you could change one thing about the air in this reception, what would it be. They are in it for nine hours while a patient is in it for forty minutes.
Part two — the site standard, item by item
Twelve items in a group specification, which must be identical everywhere, which may vary by building, and the reason. Only three of the twelve are genuinely fixed, and they are the three that create the identity.
The group specification
What must be identical across branches, what may differ, and why
| Item | Identical everywhere? | May differ by building? | Why |
|---|---|---|---|
| The composition ★ | Yes — one, absolutely | No | This is the identity. Two compositions across a group is two identities |
| The intensity target | Yes, expressed as the four-o'clock outcome test | No | An outcome travels between buildings; a dial number does not |
| The placement rule | Yes, expressed relative to the corridor and the grilles | No | A relative rule applies to any floor plan without translation |
| The machine or format | No | Yes — reed, Sukoon or Vaayu by measured arrival zone | Standardising hardware means overbuying in the small site or underholding the large one |
| The dial setting | No | Yes, whatever achieves the target in that room | Rooms differ in volume, exchange, ceiling height and occupancy |
| The dose in the tank | Start identical, then let it vary | Yes, if the target requires it | A common starting dose gives the group one number to audit from |
| Run hours | Yes in principle — clinic hours only | Yes in detail, since branch hours differ | Nothing should run overnight or during any cleaning shift |
| Who may raise the level | Yes — one named person per site | No | Without an owner, three sites drift upward independently |
| Who may switch it off | Yes — anyone on that desk, immediately | No | Staff are in that air nine hours a day; a control needing permission is not a control |
| The fragrance-free seat | Yes — one must exist in every reception | Yes in where it is | Somewhere a person was going to sit anyway, far enough for the difference to be real |
| The clinical boundary | Yes, and it is absolute | No | Examination, diagnostics, cabins, procedure and post-operative areas take nothing |
| Ductwork | Yes — nothing goes in it, in any branch | No | A central system serves clinical rooms in the same breath as reception |
| The honest caveat: this is a way of writing your own internal standard, not a programme SOSA operates. SOSA publishes no bulk or commercial pricing, no corporate or B2B account, no annual maintenance contract, no installation service, no stated warranty term, no lead time and no multi-location programme, and whether the Vaayu's Bluetooth app is iOS or Android is not published either — nothing on this page states or implies a discount, a slab, an invoice arrangement, an installation visit, a service contract, a warranty period or a delivery window, because none is published. Ask through the contact page and assume none of it exists until told otherwise in writing. Nothing here is medical, clinical, ventilation, air-handling, infection-control, accreditation or regulatory advice; no clinical outcome, patient response, safety property or business result — including any effect on ratings, footfall, patient numbers or revenue — is claimed. Some people are sensitive to airborne fragrance, which is why the clinical pathway stays fragrance-free in every branch and why a fragrance-free seat must genuinely exist in each. Fragrance adds a scent alongside what is already in the air; it removes nothing. | |||
Shop this guide
Three formats for three buildings, carrying one composition and one level
Mountain Breeze · under 150 sq ft₹849Shop → Sukoon · 150–320 sq ft₹1,899Shop → Vaayu · past 320 sq ft, freestanding₹11,999Shop →
The SOSA principle
A signature scent across sites is not a hardware rollout. It is one composition, one outcome test and one placement rule, applied by three different machines to three different rooms — and the discipline that keeps it consistent is administrative, not technical.
Which is why the most valuable thing in this page is a card with three sentences on it, not a purchase order.
Part three — the commercial gap, stated plainly
There is a part of this question that has nothing to do with fragrance, and I would rather set it out at length than have a group discover it in month four. SOSA does not currently sell a separate Vaayu cold-air refill oil. The machine ships with four cold-air fragrances at 100ml each — 4 × 100ml = 400ml — which lasts roughly 90+ days at a mid intensity, or 400 ÷ 90 = 4.4ml a day, and that is the whole supply available at the time of writing. For a household this is an inconvenience to be dealt with in three months. For a group standardising an identity it is structurally different, because you are not buying a consumable; you are adopting a standard that your receptions will learn, your returning patients will associate with your name, and — if you put it in your brand language — you will have committed to publicly. If the supply line behind that has not been confirmed, you have built an operational dependency on something you have not verified, which is exactly the sort of exposure a practice would never accept in any other part of its purchasing. So: ask through the contact page what cold-air fragrance supply is currently available and on what basis, and get the answer before committing. And the water-based Hotel Collection sold for ultrasonic machines is never a substitute for it — it is a different product that must not be used in a Vaayu despite sharing scent names.
The second half of the gap is broader and equally worth stating. SOSA publishes no bulk or commercial pricing, no B2B or corporate account, no annual maintenance contract, no installation service, no stated warranty term, no lead time and no multi-location programme. Spare parts, servicing arrangements and whether the Bluetooth app is iOS or Android are unverified. I am not going to imply that a discount exists because a group is buying three machines, or that an invoice arrangement can be organised, or that somebody will come and install it, or that a delivery window can be promised — none of that is published, and inventing it would be the sort of thing that costs a supplier a clinical customer permanently. What I will say is that this is a purchase you can make perfectly well without any of those things, provided you go in knowing they are absent. Three Sukoons at ₹1,899 each is 3 × ₹1,899 = ₹5,697, ordered like any other retail purchase with free shipping above ₹499; there is nothing complicated about it. It only becomes complicated if you have assumed a framework that does not exist, and then built a rollout schedule on it.
The third thing is a caution about what a signature scent should be allowed to carry. I would not build brand language around a fragrance in a healthcare group, and I say that as the person selling the fragrance. A scent in a clinic reception should be quiet enough that a patient notices the room is pleasant and cannot name what is in it — which means it is not a strong enough signal to hang a brand on, and trying to make it one pushes the level past where it belongs in a clinical building. There is also a claims problem: everything a marketing team would naturally want to say about a signature scent — that it calms, that it reassures, that it makes patients more comfortable, that it improves the experience — is a claim I will not support and you should not make. What a consistent low scent honestly gives you is a building that reads as looked-after and does not vary between branches. That is a real and unglamorous benefit, and it is the whole of what I am prepared to claim for it. Keep the marketing quiet and the level quieter, and the programme will hold up under any scrutiny a clinically trained patient applies to it.
A group adopting a scent is adopting a standard, not buying a consumable. Standards need supply, and the supply question here has not been answered publicly — so ask it in writing before you teach three receptions to expect the same bottle.
— Sonal Sahani, SOSA
Part four — the arithmetic and the unanswered questions
Nine lines of a three-site plan, what each costs at published retail, what SOSA publishes about it, and the exact question to ask before committing. The third column is short on purpose, and the fourth is the useful one.
Three sites, costed
Published prices, published gaps, and the question to put in writing
| Line | At published retail, for three sites | What SOSA publishes | The question to ask first |
|---|---|---|---|
| Machines, mixed by size ★ | e.g. ₹849 + ₹1,899 + ₹11,999 = ₹14,747 | Retail prices only | None needed — but size each branch before ordering, not after |
| Three identical Sukoons instead | 3 × ₹1,899 = ₹5,697 | Retail prices only | Does the largest branch's public volume actually stay under 320 sq ft? |
| Ultrasonic fragrance, 300ml per site | 3 × ₹1,799 = ₹5,397, at ₹1,799 ÷ 300 = ₹6.00 a millilitre | 15ml ₹299 · 100ml ₹999 · 300ml ₹1,799 · seven 15ml ₹1,799 | Nothing — but note the seven-pack is 7 × 15 = 105ml at ₹17.13/ml: variety, not value |
| Reed oil refills, if any branch runs bottles | 500ml ₹3,499 = ₹3,499 ÷ 500 = ₹7.00 a millilitre | 300ml ₹2,399 (₹8.00/ml) · 500ml ₹3,499 (₹7.00/ml) | Reeds are not sold separately — how will you refresh them? |
| Vaayu cold-air fragrance, ongoing | 400ml in the box, roughly 90+ days, then unresolved | No separate cold-air refill oil is currently sold | What supply is available now, and on what basis? Get it in writing |
| Bulk or group pricing | Not applicable at published prices | Nothing — no bulk pricing, slab or corporate account | Is there any commercial arrangement at all? Assume not until told otherwise |
| Installation across three sites | Nil — these are freestanding devices you place yourself | No installation service is published | Nothing to ask, but do not plan around a visit |
| Warranty and servicing | Unknown | No stated warranty term; spare parts and servicing unverified | What is the warranty position, and what happens if a unit fails in month seven? |
| Lead time for a rollout | Unknown | No published lead time or delivery window | Can three units ship together, and by when? Do not commit an opening date to it |
Honest notes for buyers: every figure above is published retail arithmetic, shown in full, and nothing on this page states or implies a discount, a price slab, a bulk rate, a corporate or B2B account, an invoice arrangement, an installation visit, a maintenance contract, a warranty period, a lead time or a multi-location programme, because SOSA publishes none of these — ask through the contact page and assume none exists until told otherwise in writing. Nothing on this page is medical, clinical, ventilation, air-handling, infection-control, accreditation or regulatory advice, and no clinical outcome, patient response, safety property or business result — including any effect on ratings, footfall, patient numbers, brand recall or revenue — is claimed for any product or programme. No SOSA product is described as safe or unsafe for any patient or staff group; some people are sensitive to airborne fragrance, which is why the clinical pathway stays fragrance-free in every branch and why a fragrance-free seat must genuinely exist in each reception. Fragrance adds a scent alongside what is already in the air — it removes, masks, neutralises or purifies nothing — and SOSA sells no air purifier, no dehumidifier and no room spray; every SOSA spray is a car perfume. Coverage figures are manufacturer specifications and vary with ceiling height, air exchange and occupancy: Boond ₹899 about 150 sq ft, Sukoon ₹1,899 270–320 sq ft, Megh ₹3,499 only about 215 sq ft — less than a Sukoon, and never the coverage step between branches, Safar ₹3,999 with no published coverage figure at all, Vaayu ₹11,999 up to 1000 m³ ≈ 2,000–3,000 sq ft and under 38 dB, Aangan ₹25,999 about 8,000–10,000 sq ft, Meenar ₹38,500 12,000–18,000 sq ft. Boond, Sukoon and Megh are ultrasonic and add humidity; reeds and the Vaayu add none. Reed strength positions are on SOSA's own internal scale at six reeds, not an industry standard, a concentration or a quality ranking, and no bottle-life figure is published below six reeds; replacement reeds are not sold separately, and the range has no oud, no musk-forward composition and no aquatic. A 50ml lasts 6–8 weeks and a 130ml 14–18 weeks, and both project the same. Reed oil cannot go in an ultrasonic machine, water-based Hotel Collection cannot go in a reed bottle, there is no hotel-inspired reed diffuser, and neither goes in a Vaayu. SOSA does not currently sell a separate Vaayu cold-air refill oil; the 400ml supplied — 4 × 100ml = 400ml, roughly 90+ days, or 400 ÷ 90 = 4.4ml a day at a mid setting — is the whole supply at the time of writing, and the water-based Hotel Collection is never a substitute. Never mount a diffuser into a clinic's shared HVAC in any branch. Hotel Collection scents are inspired by hotel styles only; SOSA is independent and unaffiliated, and no hotel group is a SOSA customer, partner or reference. Free shipping above ₹499.
The branch that may justify it — and the condition attached
SOSA Vaayu · waterless cold-air nebulisation, Bluetooth scheduling, key-lock ₹11,999
Pressurised air atomises undiluted fragrance oil into a dry nano-mist — no water, no heat, no residue, no humidity added. Rated up to 1000 m³, roughly 2,000–3,000 sq ft. In a three-site group it belongs in the branch whose connected public volume genuinely exceeds about 320 sq ft, and it is bought there for under 38 dB, a key-lock and 1h/4h/8h/24h run windows with day selection — not for reach, which it has in excess of anything a clinic reception needs. The key-lock matters more in a group than anywhere else, because it is the only mechanism in the range that stops a level drifting upward across a season with several people on a desk. 400ml refillable tank, DC 12V/1A at 5W, 165 × 80.5 × 215 mm, 0.9 kg, black or white, CE, RoHS and SGS certified, shipping with four cold-air fragrances at 100ml each. Two clauses for a group specification. Freestanding in reception only, at the end furthest from the corridor to consultation and clear of every return grille — it is capable of wall and HVAC mounting and in a clinical building you must not use it that way. And there is no separate Vaayu cold-air refill oil on sale at the time of writing: that 400ml runs roughly 90+ days and is the whole supply, so confirm current availability with SOSA in writing before you build a three-site standard around it.
SS
ISIPCA
Versailles
Versailles
A note from Sonal
A group opening its third eye clinic asked me for a proposal covering all three buildings, and specified in the brief that the solution should be identical across sites so that the experience would be consistent. It is a perfectly sensible instruction, and it is the one part of the brief I had to argue with, because the word "solution" was carrying two different things: what people would smell, and what would produce it.
Their first clinic had a 130 square foot reception on split units, their second a 250 square foot waiting area, and the new one an open public floor of a little over 380 with a ducted system. An identical machine in all three would have been either three times too much in the first or not enough in the third. What we did instead was write one card — one composition, one four-o'clock outcome test, one placement rule, one named owner per site — and then buy a bottle, a Sukoon and a Vaayu. Three receptions, one identity, and a total spend well below what a uniform rollout would have cost.
The part of that conversation I would repeat to anyone is the part they did not ask about. Before we agreed anything, I told them there is no separate Vaayu cold-air refill oil currently sold, and that SOSA publishes no bulk terms, no maintenance contract, no warranty period and no lead time. They asked why I was telling them that in a proposal. The honest answer is that a group discovers those things eventually, and the only question is whether they discover them from me at the start or from an empty tank in month four. I would rather lose a rollout than have a clinical customer find out I had let them assume. Composed and made in small batches in Pune, and a part of every order funds a girl's classroom through Nanhi Kali.
Frequently asked questions
Should all three clinics use the same machine so staff are trained once?
Only where the rooms genuinely justify it. Training is a real benefit and if two of your three arrival zones fall between 150 and 320 sq ft then standardising those two on a Sukoon at ₹1,899 makes sense. But do not extend it to a building it does not fit: an oversized machine in a small reception has to run at the bottom of its range to avoid overdosing the room, and an undersized one in a large hall produces pockets rather than an even volume. Identity comes from the composition and the level, which travel perfectly; the appliance is just the delivery mechanism and it should suit the room it is in.
Is there a group or bulk price for three or more units?
None is published, and I am not going to imply one exists. SOSA publishes no bulk or commercial pricing, no corporate or B2B account, no invoice arrangement, no annual maintenance contract, no installation service, no stated warranty term, no lead time and no multi-location programme. What is published is retail pricing with free shipping above ₹499 — three Sukoons at ₹1,899 each is 3 × ₹1,899 = ₹5,697, ordered like any other purchase. If you need a commercial framework, ask through the contact page before committing, and plan on the basis that none exists until somebody tells you otherwise in writing.
Can we use the same fragrance in a reed diffuser at one site and a machine at another?
Not literally the same product, and this catches groups out. The reed range and the water-based Hotel Collection for ultrasonic machines are separate lines: reed oil cannot go in an ultrasonic machine, Hotel Collection cannot go in a reed bottle, there is no hotel-inspired reed diffuser, and neither goes in a Vaayu, which runs undiluted cold-air oil. So a mixed-format group has to accept that the small branch's bottle and the large branch's machine are carrying different products. If exact identity matters to you, standardise on one format across the sites where you can — which usually means machines — and accept a reed only in a branch too small for anything else.
One branch has central air conditioning. Can we duct the scent there for consistency?
No, and this is the recommendation I will not soften in any building with examination rooms. A central system serves your consultation cabins and testing rooms in exactly the same breath as your reception, so ducting fragrance into it is an engineered method of delivering fragrance into the clinical pathway. The Vaayu is capable of HVAC mounting and in a clinic you must not use it that way, whatever an air-conditioning contractor proposes. Freestanding in reception, at the end furthest from the corridor to consultation and clear of every return grille, is the only placement I would advise — in that branch and in every other.
How do we stop the three branches drifting apart over time?
Administratively, because the cause is adaptation and it is not fixable by equipment alone. One named person per site owns the level and is the only one who may raise it; anybody on that desk may lower it or switch it off immediately, without asking. A quarterly cold-nose check — somebody outside for fifteen minutes, in through the patient door at four in the afternoon, one sentence written before speaking to anybody — sent to whoever holds the group standard. A key-lock where the machine has one, used to prevent raising rather than stopping. And an annual comparison of the three site cards. Everything in that list is free.
Eye clinics · whole-practice routing · multi-site identity
One oil, one level, different machines — and ask about supply first
Identity across three eye clinics comes from one composition held at one low intensity in one relative position, not from repeating a machine. Measure each arrival zone and size it on its own: a reed diffuser under 150 sq ft, a Sukoon at ₹1,899 from 150 to 320, a Vaayu at ₹11,999 only past 320 on one connected path and only freestanding. Name one owner per site, let any desk switch it off, and audit quarterly with a cold nose at four. Before standardising, confirm in writing what Vaayu cold-air fragrance supply exists, and note that no bulk pricing, corporate account, maintenance contract, installation, warranty term, lead time or multi-site programme is published. Free shipping above ₹499.
Ask about supply first → Sukoon ₹1,899
Continue the read
Routing your own practice
- The complete plan for a premium eye centre — the pillar this family ends on.
- Zoning a new LASIK centre at layout stage — for the branch still on a drawing.
- 1,800 sq ft with central AC — the branch with ducted air.
- Reception, cabins, diagnostics and optical — how many zones each branch really has.
- Brand: the SOSA founder story.
Editorial standards & sources
About this guide: Written by Sonal Sahani, ISIPCA Versailles-trained founder and perfumer at SOSA Home & Body. It sets out how a multi-site eye practice can hold one scent identity — one composition, one intensity target expressed as an outcome, one placement rule and one governance model — while sizing hardware separately to each branch's measured arrival zone. It states the published commercial position plainly: SOSA publishes no bulk or commercial pricing, corporate account, maintenance contract, installation service, stated warranty term, lead time or multi-location programme, and does not currently sell a separate Vaayu cold-air refill oil. Nothing in it is medical, clinical, ventilation, air-handling, infection-control, accreditation or regulatory advice; no clinical outcome, patient response, safety property or business result is claimed. No competitor is named or rated, and no hotel group is a SOSA customer, partner or reference.SOSA range, specifications and prices used in this guide (verified August 2026): Vaayu ₹11,999 — waterless cold-air nebulisation of undiluted fragrance oil; no water, no heat, no added humidity, no white mineral dust. Coverage up to 1000 m³, about 2,000–3,000 sq ft. 400ml refillable tank lasting roughly 90+ days at a mid setting. Bluetooth app plus onboard controls, 1h / 4h / 8h / 24h run windows, day selection, adjustable intensity, auto-stop and key-lock. Under 38 dB. DC 12V / 1A, 5W. Freestanding or wall / HVAC mount. CE, RoHS and SGS certified. SOSA does not currently sell a separate Vaayu cold-air refill oil; the 400ml supplied in the box is the fragrance available at the time of writing, so a practice planning continuous or multi-site use should confirm current refill availability with SOSA before committing. The water-based Hotel Collection is made for ultrasonic machines and must not be used in a Vaayu. Other machines: Boond 300ml ₹899 (~150 sq ft, ultrasonic) · Sukoon 500ml ₹1,899 (270–320 sq ft, 16–18 hours on low, remote and steady/2H/4H timers, three 15ml fragrances included, ultrasonic) · Megh 6L ₹3,499 (~215 sq ft — a runtime and humidity machine that covers less than a Sukoon, never a coverage upgrade) · Safar ₹3,999 (waterless cold diffusion, cordless, 20ml, about 6.9cm, three speeds, 1/2/3-hour auto-off — sold as a car and travel diffuser, personal-scale only; SOSA publishes no coverage figure for it) · Aangan ₹25,999 (HVAC nebulising, ~8,000–10,000 sq ft) · Meenar ₹38,500 (commercial HVAC, 12,000–18,000 sq ft). Water-based Hotel Collection for ultrasonic machines: 15ml ₹299 · 100ml ₹999 · 300ml ₹1,799 · pack of seven ₹1,799; scents are inspired by the atmosphere of well-known hotels — SOSA is an independent Indian brand and is not affiliated with, endorsed by or supplying any hotel group. Reed diffusers ₹749–₹1,349 (50ml 6–8 weeks, 130ml 14–18 weeks, six fibre reeds, no 100ml size; replacement reeds are not sold separately). Reed oil cannot be used in an ultrasonic machine and Hotel Collection oil cannot be used in reeds. SOSA sells no room spray or home spray — every SOSA spray is a car perfume. Nothing in this guide is medical, clinical or safety advice. A fragrance diffuser adds a scent to the air. It does not clean, purify, filter, sanitise or disinfect air, does not remove or neutralise disinfectant, damp or occupancy smells, and has no effect on comfort, anxiety, waiting time, recovery or any clinical outcome. Some people are sensitive to airborne fragrance, which is why this guide recommends that examination rooms, diagnostic areas, consultation cabins, procedure suites and post-operative areas remain fragrance-free, that a fragrance-free seating option always exist, and that a diffuser is never mounted into shared HVAC in a clinical building. Decisions about clinical policy, ventilation standards, infection control and patient suitability rest entirely with the practice and its clinicians. A persistent stale, damp or disinfectant smell is a ventilation, moisture or cleaning problem — SOSA sells no dehumidifier and no air purifier, and fragrance should never be used to cover one. Coverage, runtime and longevity figures are manufacturer specifications and typical ranges, not guarantees, and vary with room volume, ceiling height, air exchange, occupancy and season. SOSA publishes no commercial or bulk pricing, no corporate account, no annual maintenance contract, no installation service, no stated warranty term and no multi-location programme; warranty length, spare parts, servicing and app platform availability are unconfirmed, and larger or multi-site enquiries should go through the contact page before any commitment. Composed and made in small batches in Pune, India. Free shipping above ₹499. A portion of every order supports girl-child education through Nanhi Kali. Prices subject to change — see the live product pages.