Does Chennai Heat Make Reed Diffuser Oil Evaporate Faster?

Does Chennai Heat Make Reed Diffuser Oil Evaporate Faster?

 

★ ★ Warmth speeds evaporation and heavy coastal air slows it — Chennai has both at once, which is why the bottle empties faster than the room soundsReed diffusers 50ml from ₹749 · 130ml from ₹1,249 · duo sets from ₹1,498 · oil refill 300ml ₹2,399 · free shipping above ₹499A portion funds girl-child education
★ SOSA Reed Diffusers · heat, humidity and how long a bottle lasts
Heat costs you duration, not strength — so the correction in a warm coastal flat is a bigger bottle or fewer reeds, never a stronger scent
★ ★ ★ ★ ★
★★★★★
"First 50ml went in about five weeks and I assumed it was a bad bottle. It was the flat. Moved to the 130ml and stopped counting weeks."
Kavipriya S. Adyar
Mountain Breeze 130ml ₹1,349
★★★★★
"Warmth speeds it up and heavy air slows it down at the same time. The bottle drops fast and the room still reads quiet. Both true, and nobody had told me."
Hariharan V. Mylapore
Morning Freshness 50ml · warm hall
★★★★★
"Mine sat on a sill that catches afternoon sun. Moved it two feet onto a side table and the level stopped falling like that. Cost nothing."
Deepa R. Besant Nagar
Placement in a hot room
★★★★★
"Dropped from six reeds to four in a small warm bedroom. Quieter, and the bottle went past eight weeks instead of stopping short of six."
Srinath B. Velachery
Evening Calm 50ml ₹799
★★★★★
"Bought the 300ml oil once I knew the scent suited the flat. Pouring into glass I already own is what made a fast-turnover habit affordable."
Meenakshi T. Kotturpuram
Oil refill 300ml ₹2,399
★★★★★
"A hot flat is a duration problem, not a strength problem. I was about to buy a machine to fix something a bottle size fixed."
Arjun N. Thiruvanmiyur
Morning Freshness 130ml ₹1,249
★★★★★
"First 50ml went in about five weeks and I assumed it was a bad bottle. It was the flat. Moved to the 130ml and stopped counting weeks."
Kavipriya S. Adyar
Mountain Breeze 130ml ₹1,349
★★★★★
"Warmth speeds it up and heavy air slows it down at the same time. The bottle drops fast and the room still reads quiet. Both true, and nobody had told me."
Hariharan V. Mylapore
Morning Freshness 50ml · warm hall
★★★★★
"Mine sat on a sill that catches afternoon sun. Moved it two feet onto a side table and the level stopped falling like that. Cost nothing."
Deepa R. Besant Nagar
Placement in a hot room
★★★★★
"Dropped from six reeds to four in a small warm bedroom. Quieter, and the bottle went past eight weeks instead of stopping short of six."
Srinath B. Velachery
Evening Calm 50ml ₹799
★★★★★
"Bought the 300ml oil once I knew the scent suited the flat. Pouring into glass I already own is what made a fast-turnover habit affordable."
Meenakshi T. Kotturpuram
Oil refill 300ml ₹2,399
★★★★★
"A hot flat is a duration problem, not a strength problem. I was about to buy a machine to fix something a bottle size fixed."
Arjun N. Thiruvanmiyur
Morning Freshness 130ml ₹1,249
SOSA Mountain Breeze reed diffuser for a warm Chennai flatMountain Breeze ₹849 SOSA Morning Freshness reed diffuser, bright citrus and eucalyptusMorning Freshness ₹749 SOSA Evening Calm reed diffuser for a warm bedroomEvening Calm ₹799 SOSA reed diffuser oil-only refill bottleOil refill 300ml ₹2,399 SOSA Day and Night reed diffuser duo setDay & Night duo ₹1,498
★ ★ The 130ml, because heat costs duration ₹1,349 What makes a hot-weather habit affordable ₹2,399
✓ Warmth raises the evaporation rate — a hot flat finishes a bottle sooner ✓ Humid coastal air slows release from the reed surface — the two pull opposite ways ✓ Free shipping above ₹499 · a portion of every order funds girl-child education

 

Founder Diaries · Chennai · Heat and Evaporation
By Sonal Sahani · ISIPCA Versailles 9 min read Updated August 2026
Yes — and then immediately no, which is why this question is worth a whole page rather than a sentence. Warmth raises the rate at which fragrance oil evaporates off a reed, so a bottle standing in a warm Chennai flat finishes sooner than the same bottle in a mild one. But the heavy coastal air arriving with that heat does the opposite: high humidity slows evaporation from the reed surface. Chennai gives you both at once, and the result is a flat where the bottle drops visibly while the room reads quieter than you expected. That is not a fault and not a weak batch. The correction is a size change rather than a scent change: buy the 130ml at ₹1,349 instead of the 50ml, or run four reeds instead of six.
Quick answers — read this first
Yes, heat speeds evaporation — and it costs you weeks, not strength. A 50ml runs 6–8 weeks at six reeds; in a consistently warm flat expect the short end of that range rather than the long one.

Humidity pushes the other way. Heavy air slows release from the reed surface, so a coastal flat can feel quieter in the room even while the level in the glass keeps falling.

Buy the bigger bottle, not a stronger scent. 130ml ₹1,249 or ₹1,349 runs 14–18 weeks and at six reeds projects the same. Size is the duration control.

Free fixes first. Off the sunny sill, away from the balcony draught, out of the fan's line. A bottle in afternoon sun empties without filling the room.
The short answer
Short answer: yes, warmth makes reed diffuser oil evaporate faster, and the effect shows up as shorter bottle life rather than a louder room. For a warm Chennai flat, buy the Mountain Breeze 130ml at ₹1,349 for a hall you use all day, or Evening Calm 50ml at ₹799 with four reeds for a bedroom.
The mechanism: fragrance oil climbs six fibre reeds by capillary action and leaves the exposed length as vapour. Warmth gives the molecules at that surface more energy to leave, so a warm room draws oil off the reeds faster. Humidity works against it: when the surrounding air is already carrying a great deal of moisture, the exchange at the reed surface slows. Chennai supplies heat and heavy air together, so the two overlap rather than cancel neatly. What most people notice is a bottle finishing at the short end of its range while the room never gets dramatically louder.
Shop: Mountain Breeze 50ml ₹849 · 130ml ₹1,349 · Morning Freshness ₹749 · ₹1,249 · Evening Calm ₹799 · oil refill 300ml ₹2,399. Free shipping above ₹499.
In this guide
14–18 weeks instead of 6–8 — heat costs duration, so buy duration
Mountain Breeze 130ml · ₹1,349
Bright and dry, the easiest composition in a warm room
Morning Freshness 50ml · ₹749
₹7–8 per ml against ₹15–17 — the answer to faster turnover
Oil refill 300ml · ₹2,399
Straight answer
Does Chennai heat make reed diffuser oil evaporate faster — and what should I do about it?
1. Yes. Warmth raises the evaporation rate, and the cost lands on duration. The same bottle that runs the full 6–8 weeks in a mild room tends towards the short end of that range in a flat that stays warm through the day. Nothing about the composition changes; there is less oil left each week.

2. It does not make the room smell stronger in proportion. A warm flat is also a flat with fans running and doors open, and airflow carries scent away from the bottle faster than reeds release it. You can lose oil and lose the room at the same time.

3. Coastal humidity pushes in the opposite direction. When the air is heavy, release from the reed surface slows — which is exactly why a warm coastal flat behaves unlike a dry inland one.

4. The correction is size, not strength. Buy the 130ml at ₹1,349 rather than the 50ml at ₹849. It runs 14–18 weeks against 6–8, and at the same six reeds it projects identically. Size is the duration control; reed count is the volume control.

5. Or reduce the reeds and accept a quieter room. Four reeds instead of six in a small warm bedroom takes the output down and stretches the bottle. It costs nothing and is reversible in ten seconds.

6. Do the free things before either. Off the sunlit sill, off the top of the fridge, out of the line of a fan or an open balcony door. A bottle in a hot draughty spot empties fastest and delivers least.

7. From the second bottle onwards, buy oil rather than glass. A 300ml refill at ₹2,399 works out at roughly ₹7–8 per ml against ₹15–17 for a fresh 50ml, into your own vessel and reeds.

Everything is composed and handmade in small batches in Pune, tested through 45°C summer heat and 85% monsoon humidity, and a portion of every order supports girl-child education through Nanhi Kali.
TL;DR: yes, heat speeds evaporation, but coastal humidity slows release from the reed, so a Chennai flat drains a bottle quickly without ever getting dramatically louder. Fix it with size — 130ml ₹1,349, 14–18 weeks — or with four reeds rather than six. Move it out of the sun and the draught first; that is free.
SOSA Mountain Breeze reed diffuser 130ml, the size to buy in a warm Chennai flat
Heat takes weeks off a bottle — so buy weeks back
SOSA Mountain Breeze · Himalayan pine, sage & Indian cedar ₹1,349 / 130ml
The dry, green, woody end of the range, and the composition I would put in a warm flat before any other. Pine and sage over Indian cedar — nothing sweet in it to thicken as the room warms. A 130ml runs 14–18 weeks where a 50ml runs 6–8, which is the honest answer to a climate that speeds evaporation. It is not stronger: at six reeds the two sizes project the same, because reach comes from exposed reed surface rather than from how much oil sits in the glass. 9.4 on SOSA's own internal strength scale at six reeds — our scale, not an industry standard. Refillable glass, six fibre reeds, alcohol-free and phthalate-free on a heat-stable CCT carrier. The 50ml is ₹849. Flip weekly with gloves; stand it on a tray, out of direct sun.
Shop Mountain Breeze 130ml →

Part one — two forces, pulling opposite ways

Most of what is written about diffusers and weather picks one variable and stops. Heat speeds evaporation; humidity slows it. Both are true, and in a coastal city they arrive together. Your whole experience of a reed diffuser in Chennai is the interference pattern between those two.

1
WARMTH · THE RATE GOES UP, AND THE CLOCK RUNS DOWN
A warm room takes oil off the reeds faster than a cool one, every hour of the day
Evaporation happens at a surface, and how quickly depends on how much energy the molecules at that surface have. A warmer room supplies more. So a bottle in a flat that stays warm from mid-morning to late evening gives up oil faster than the same bottle in a mild one, every day, without anything being wrong. This is the duration effect, and it is the one you can see: the level drops, and a 50ml quoted at 6–8 weeks lands nearer six than eight. The composition is unchanged; you are spending it faster. It is also why I quote ranges rather than a single number: a flat with cross-ventilation and a warm afternoon is running a different experiment from a shuttered bedroom, and both are normal.
The rule: heat is a duration variable. It shortens the bottle. It does not make the fragrance stronger, richer or better.
2
HEAVY AIR · THE SURFACE EXCHANGE SLOWS
Humidity works against release from the reed, which is why the room can read quiet
SOSA Morning Freshness reed diffuser, bright and dry for a humid warm flatMorning Freshness₹749 · 50mlNow the other direction. When the air around a reed is already carrying a great deal of moisture, evaporation from that surface slows. In a coastal flat with the windows open to heavy air, that shows up as a room which reads softer than the same bottle would in a dry month — released grudgingly at the surface even while the warmth pushes it out. It is also why SOSA uses fibre reeds rather than rattan. Rattan is a natural cane whose pores swell and clog where the air stays heavy; the bottle then stops wicking and people conclude the oil was weak. Fibre does not close up that way, and we tested it through 85% humidity before selling anything.
The tell: lift a reed. A wet line sitting high and dark with a quiet room usually means saturation, not weakness. Flip it.
3
BOTH AT ONCE · WHY CHENNAI IS NOT DELHI
Dry heat and coastal heat produce two different bottles from the same glass
Put the same 50ml in a hot dry inland flat and in a warm coastal one. In the dry flat both variables agree: warmth speeds evaporation, dry air offers little resistance, and the bottle empties quickly while the room reads brightly. In the coastal flat the two disagree. Warmth keeps pushing oil off the reed while heavy air keeps slowing the surface exchange, and what you get is a bottle that still finishes early with a room that never becomes loud. The two symptoms only look contradictory — one belongs to the reed surface, the other to what happens to vapour once it is in the room. Chennai runs both experiments on you at once, and the answer is to buy the size that survives it.

Part two — heat pushes, humid air pulls back

Six things that happen to a reed diffuser in a warm coastal flat, and the direction each force pushes them. These are directions of effect, not measurements.

The opposing-forces ledger · what warmth does, what heavy air does
Six effects, and which way each of the two variables pushes them
What is happening Which way warmth pushes it Which way heavy air pushes it What you actually notice
Oil leaving the exposed reed ★ Faster — more energy at the surface Slower — the surface exchange has more to work against A level that drops steadily while the room stays modest
How long the 50ml lasts Shorter — towards six weeks rather than eight Longer — heavy weeks stretch it back out Net: usually the short end of 6–8 weeks
How loud the room reads in the afternoon A little more vapour available Softer release, and fans and open doors take it away Quieter than the falling level suggests
The bright top notes in the composition They leave sooner — lightest materials first Little effect on which notes go first A settled, base-leaning character within a fortnight
Where the wet line sits on a reed Lower — the reed gives up oil quickly Higher — reeds sit saturated for longer High and dark in the heaviest weeks; flip more often
How often flipping helps Weekly is enough on the dry side Twice a week earns its keep when the air is heaviest Gloves on, both ends coated, then leave it alone
The honest caveat: these are directions, not magnitudes. I cannot tell you that your bottle will lose a specific number of days to a warm week — a flat with a fan on and a balcony door open is a different room from one shut all afternoon, and airflow moves the result more than heat or humidity does alone. What I can say: a 50ml is quoted at 6–8 weeks and a 130ml at 14–18, warm rooms sit at the short end, heavy air pulls back towards the long one — and no reed diffuser reduces humidity or does anything corrective about moisture.
Shop this guide
Two compositions that hold up in warmth, and the refill that makes turnover cheap
SOSA Mountain Breeze reed diffuserMountain Breeze · dry, green, nothing to thicken₹849Shop → SOSA Morning Freshness reed diffuserMorning Freshness · the brightest, for a hall used all day₹749Shop → SOSA reed diffuser oil-only refill 300mlOil refill 300ml · roughly ₹7–8 per ml₹2,399Shop →
The SOSA principle
Warmth is a duration variable and airflow is a distribution variable. Heat empties the bottle; it does not fill the room.
So the correction for a hot flat is a larger bottle or fewer reeds — never a stronger scent.

Part three — when it is not the weather at all

Before you accept the climate as your answer, three cheaper explanations are worth ruling out. The first is position, and it is far and away the commonest. A bottle standing where the afternoon sun lands, or on top of a fridge, or in the line between an open balcony door and the hall, is not experiencing your city's weather but a small extreme version of it. Sun on glass warms the oil directly; a draught strips vapour off the reeds as fast as it forms. Both empty the bottle early and both deliver less to the room, which is the worst of the available outcomes. Move it a couple of feet inland from the window, onto a tray, at waist-to-chest height, out of the line of a fan, and give it a week before judging.

The second is your own nose, and this is not a product question either. You stop registering a constant smell in the room you live in — ordinary olfactory adaptation, and it works hardest at home on the fragrance you chose yourself. It is a common reason people conclude a bottle has failed when the oil level tells a perfectly healthy story. I will not put a number on how quickly it happens or promise any technique that resets it, because there is no honest number to give. The reliable checks are free: leave the flat and walk back in, or ask whoever arrives next what they notice at the door. Remember the shape of the curve too. The first three days of a new bottle are the loudest it will ever be — freshly soaked reeds, and the lightest top notes leaving at once. What follows is a settle, then a plateau that holds to the end. The plateau is the product. A hot flat only shortens the time axis.

The third is the case where the answer is not a SOSA product. If what actually prompted this question is a smell in the flat that you want gone — a drain, a damp cupboard, a bin, cooking that has settled into soft furnishings — then no reed diffuser is the tool, and a bigger one is the wrong thing bought twice. A reed diffuser adds a fragrance that sits alongside whatever is already in your air; it does not remove, neutralise, absorb, mask, purify or filter anything, and SOSA sells no air purifier and no dehumidifier. The order that works: find the source, ventilate or extract properly, and only then add fragrance. A flat that smells persistently musty is telling you something is still wet, and that is a building and ventilation matter rather than a shopping one.

A warm flat spends the bottle faster and fills the room no better. Heat is a bill, not a benefit — so buy the size that pays it.
— Sonal Sahani, SOSA

Part four — what to buy for a warm coastal flat

Six versions of the same warm room. Reed count has its own column because in a hot flat it is the lever people forget they own.

The heat-adjusted purchase
Your room, the bottle, the reed count, and what a warm month will do to it
Your room What I would buy Reeds in What a warm month does to it
Hall or living room you occupy most of the day ★ Mountain Breeze 130ml ₹1,349 Six 14–18 weeks, tending to the short end. Nothing sweet in it to thicken
Bedroom, door shut, small and warm Evening Calm 50ml ₹799 Four Quieter and longer than six reeds would give you. Add the fifth if it fades
You want the brightest thing in the range Morning Freshness 130ml ₹1,249 Six Citrus and eucalyptus read cleanly in warmth; the top notes still go first
Two rooms, one order, one budget Day & Night duo, 2 × 50ml ₹1,498 Six and four Two sources beat one bigger bottle. Output per bottle is fixed
Your bottle keeps finishing in four or five weeks Nothing yet — move it off the sill and out of the draught Leave as is ₹0. Sun and moving air do more damage than the season does
You already know which scent suits the flat Oil refill 300ml ₹2,399 into your own glass Reuse yours Roughly 8–11 months in one 50ml vessel; ₹7–8 per ml against ₹15–17
Honest notes for buyers: a reed diffuser adds fragrance to a room. It does not clean, purify or filter air, remove or neutralise cooking, damp or smoke smells, reduce humidity, or change how anyone feels. It adds no moisture; ultrasonic machines deliver fragrance by aerosolising water and therefore do. Longevity figures — 6–8 weeks for 50ml, 14–18 weeks for 130ml at six reeds — are typical ranges rather than guarantees and vary with warmth, airflow and reed count. Warmth raises the evaporation rate and humidity slows release from the reed surface; both are directions of effect, and no temperature or humidity figure is quoted here for any city. Size is the duration control and reed count the volume control. SOSA has no 100ml reed diffuser; the sizes are 50ml and 130ml. Refills are oil only — you reuse your own vessel and reeds, and replacement reeds are not sold separately. Reed oil never goes into a machine and the water-based Hotel Collection never goes into a reed bottle. Strength figures are positions on SOSA's own internal scale at six reeds. Fragrance oil is flammable — keep bottles away from open flame, out of direct sunlight, on a tray, and away from children and pets. Made in Pune; free shipping above ₹499, and a portion of every order supports girl-child education through Nanhi Kali.
SOSA Day and Night reed diffuser duo set, two 50ml bottles for a warm Chennai flat
Two sources, because output per bottle is fixed
SOSA Day & Night duo · Morning Freshness + Evening Calm ₹1,498 / 2 × 50ml
If your flat has a hall and a bedroom you shut separately, this is a more useful ₹1,498 than any single larger bottle. A reed diffuser has a fixed output, so the only way to raise the total in a home is another source — two 50ml bottles at opposite ends beat one 130ml in the middle. Morning Freshness for the hall, six reeds; Evening Calm for the bedroom, four. A step apart on the bright-to-soft axis rather than fighting across a doorway. The 2 × 130ml version is ₹2,498 if you would rather refill twice a year than every other month — in a warm flat, the more sensible instinct.
Shop the Day & Night duo →
SS
ISIPCA
Versailles
A note from Sonal

The reason I quote 6–8 weeks and 14–18 weeks rather than a single tidy number is this page. A range is the only honest way to describe a product whose speed is set by the room it stands in. A box that prints "lasts 60 days" is describing a laboratory, not a flat with a fan on in a warm coastal city.

We built the range around heat deliberately, on a heat-stable coconut-derived CCT carrier, and the choice is a trade I would rather state than hide. Phthalate solvents push fragrance hard off a reed and win the first week outright. They also degrade in heat, and by about week six in a warm flat what you have is not the fragrance you bought. We went phthalate-free: a smaller opening, and a longer flatter plateau that survives a hot month.

The thing I would most like a reader in a warm flat to take away is that heat is a bill rather than a benefit. It costs you weeks and gives nothing back in the room. Spend on duration — a 130ml, or oil into glass you already own — and leave the strength alone, because strength lives in the reed count and in where the bottle stands. Made in small batches in Pune, tested through 45°C heat and 85% humidity, and a part of every order funds a girl's classroom through Nanhi Kali.

Frequently asked questions

Does heat make a reed diffuser stronger or just shorter?
Shorter, mainly. Warmth raises the evaporation rate, so more oil leaves the reeds each day and the bottle finishes sooner. It does not raise the ceiling on how much fragrance a room holds, because a warm flat usually has fans running and doors open. Treat heat as a cost to duration, not a free upgrade to strength.
Why does my bottle empty quickly in Chennai but the room still smells faint?
Two different things are being measured. The level in the glass is about how fast oil leaves the reeds, which warmth speeds up. What you smell is about what happens to that vapour in the room, which airflow works against — and heavy coastal air also slows release at the reed surface itself.
Should I buy the 130ml instead of the 50ml because of the heat?
Yes, if the room is one you use every day. A 130ml at ₹1,349 runs 14–18 weeks against 6–8 for a 50ml, and in a warm flat both sit towards the short end of their range. Understand what you are buying: at the same six reeds the two sizes project identically. You are buying months, not metres.
Does a fan or air conditioner make the oil evaporate faster too?
Moving air over the reeds does two things at once, both bad for you: it strips vapour from the reed surface faster, so the bottle empties early, and it carries that vapour out of the room rather than around it. Keep the bottle out of the direct line of a fan, a vent or an open balcony door.
Is a reed diffuser the wrong product for a hot city altogether?
No. It costs a little more to run in a warm flat and behaves predictably while doing it. The compositions sit on a heat-stable CCT carrier tested through 45°C, and the reeds are fibre because rattan clogs where the air stays heavy. Buy the larger size, keep it out of the sun, expect the short end of the range.
Chennai · warm coastal flats · 2026
Heat costs you weeks, not volume — so buy the bottle that has weeks in it
Mountain Breeze 130ml ₹1,349 runs 14–18 weeks; the 50ml is ₹849 and runs 6–8. At six reeds they project the same: size is the duration control, reed count the volume control. Keep the bottle off a sunlit sill, out of a fan's line, on a tray. A reed diffuser adds a fragrance alongside what is already in your air — it does not clean air, remove smells or reduce humidity. Made in Pune. Free shipping above ₹499; a portion of every order funds girl-child education through Nanhi Kali.
Mountain Breeze 130ml ₹1,349 → Morning Freshness ₹749
Continue the read
More on heat, coastal air and southern flats
Editorial standards & sources
About this guide: Written by Sonal Sahani, ISIPCA Versailles-trained founder and perfumer at SOSA Home & Body, on how warmth and humid coastal air each affect the rate at which reed diffuser oil evaporates. Directions of effect are described; no rate, percentage or timescale is claimed, and longevity ranges are typical rather than guaranteed. No temperature, humidity or rainfall figure is quoted for any city — the only test conditions stated are SOSA's own, 45°C and 85% relative humidity. No claim is made that fragrance cleans air, removes any smell, reduces humidity or affects health, mood or sleep. The situation described is a general one Chennai readers may recognise; it is not drawn from any customer, forum or third-party discussion. No competing product or brand is named, priced or rated.

SOSA range, specifications and prices used in this guide (verified from the live store, 27 August 2026): Reed diffusers — alcohol-free, phthalate-free, paraben-free and IFRA-compliant compositions on a heat-stable coconut-derived (CCT) carrier, low-VOC, in a refillable glass bottle with six fibre reeds; flip weekly. 50ml lasts 6–8 weeks and 130ml lasts 14–18 weeks; there is no 100ml reed diffuser size. Morning Freshness (Malabar lemon · peppermint · Nilgiri eucalyptus) 50ml ₹749 · 130ml ₹1,249; Garden Bloom (British rose · night-blooming jasmine) ₹799 · ₹1,299; Evening Calm (Kashmir lavender · chamomile) ₹799 · ₹1,299; Fresh Brew (Coorg coffee · Kerala vanilla) ₹849 · ₹1,349; Mountain Breeze (Himalayan pine · sage · Indian cedar) ₹849 · ₹1,349. Duo sets ₹1,498–₹1,598 for 2 × 50ml and ₹2,498–₹2,598 for 2 × 130ml. Oil-only refills 300ml ₹2,399 · 500ml ₹3,499 — the glass vessel and reeds are not included, and replacement reeds are not sold as a separate product. Machines: Boond 300ml ₹899 (~150 sq ft, about 6 hours a fill) · Sukoon 500ml ₹1,899 (270–320 sq ft, 16–18 hours on low, three 15ml fragrances included) · Megh 6L ₹3,499 (~215 sq ft — a runtime and humidity machine that covers less than a Sukoon, never a coverage upgrade) · waterless Vaayu ₹11,999 · Safar ₹3,999 (a car and travel product) · Aangan ₹25,999 · Meenar ₹38,500. The water-based Hotel Collection for ultrasonic machines (15ml ₹299 · 100ml ₹999 · 300ml ₹1,799 · pack of seven 15ml ₹1,799) cannot be used in a reed bottle or a Vaayu. Below ₹749: jar candles ₹379, Sandalwood or Smoked Oudh candle ₹449, wax melts ₹474 (a burner is required and not included), mugs ₹474, bubble and taper candles ₹569, Amber Rose candle ₹599, ceramic trinket dish and candle two-pack ₹664. A reed diffuser adds fragrance to a room. It does not clean, purify or filter air, remove or neutralise cooking, damp or smoke smells, reduce humidity, or change how anyone feels. A reed diffuser adds no moisture to the air; ultrasonic machines work by aerosolising water and therefore do. A persistent musty smell indicates moisture that needs finding and drying, and SOSA sells no dehumidifier or air purifier. Ventilate or extract first; add fragrance second. Evaporation rate rises with warmth and falls with humidity, and airflow carries scent away from the bottle — so performance varies with season, ventilation, ceiling height and room use; longevity figures are typical ranges, not guarantees. Not noticing a constant fragrance is ordinary olfactory adaptation; the reliable checks are leaving the room and returning, or asking someone who has just arrived. Strength figures are positions on SOSA’s own internal scale, not an industry standard. Fragrance oil is flammable — keep bottles away from open flame and out of direct sunlight, and out of reach of children and pets. Composed and handmade in small batches in Pune, India; tested through 45°C summer heat and 85% monsoon humidity. 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.
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