★ SOSA reed diffusers · replace the reeds?
A stalled reed and a spent reed look identical in the bottle. Twenty-four hours after a flip, they do not
★ ★ ★ ★ ★
★★★★★
"I was one click away from ordering a new bottle. Flipped all six instead, waited a day, and the room came back."
Fresh Brew 50ml
★★★★★
"Mine really had reached the end — third refill on the same reeds. A flip did nothing, and that was the answer."
Third refill, same reeds
★★★★★
"The twenty-four hour rule is the useful bit. The first hour after a flip lies to you completely."
Mountain Breeze 130ml
★★★★★
"Learned the hard way that the reeds are the consumable and the oil is the stable part. I had it backwards for a year."
Reeds vs oil
★★★★★
"Wish reeds were sold on their own. At least the site says so plainly instead of pretending the refill includes them."
Oil refill 300ml
★★★★★
"Six reeds that had run through a monsoon and two refills were done. New bottle, new reeds, same scent — completely different room."
Evening Calm 50ml
★★★★★
"I was one click away from ordering a new bottle. Flipped all six instead, waited a day, and the room came back."
Fresh Brew 50ml
★★★★★
"Mine really had reached the end — third refill on the same reeds. A flip did nothing, and that was the answer."
Third refill, same reeds
★★★★★
"The twenty-four hour rule is the useful bit. The first hour after a flip lies to you completely."
Mountain Breeze 130ml
★★★★★
"Learned the hard way that the reeds are the consumable and the oil is the stable part. I had it backwards for a year."
Reeds vs oil
★★★★★
"Wish reeds were sold on their own. At least the site says so plainly instead of pretending the refill includes them."
Oil refill 300ml
★★★★★
"Six reeds that had run through a monsoon and two refills were done. New bottle, new reeds, same scent — completely different room."
Evening Calm 50ml
✓ Six fibre reeds per bottle · fibre rather than rattan, because rattan clogs in Indian humidity ✓ Refills are oil only — reeds are not sold separately, and we say so ✓ Composed and handmade in small batches in Pune · free shipping above ₹499
Founder Diaries · Reed Diffusers · Reed Replacement
The 24-hour rule: the hour after a flip is deceptively strong and tells you nothing. The next morning is the honest reading.
Replace only if: the flip produced nothing at all within a day, and the reeds have done several months or crossed more than one refill.
The honest gap: SOSA does not sell replacement reeds separately. Refills are oil only. A new bottle brings six new fibre reeds with it.
Oil refill₹2,399 · 300mlThe genuine end of a reed's life is different and slower to arrive. Household dust settles on an oily exposed surface, the heaviest fixative material builds up in the fibre channels rather than in a removable film, and the capillary path narrows until it no longer supports a useful flow. Flipping cannot help, because both ends are now compromised. This is why I say reeds are the consumable and the oil is the stable part — people habitually replace the oil and keep the reeds, when the physics runs the other way round. We use fibre rather than rattan precisely to push this point further out: rattan's natural pores clog readily in Indian humidity, which is why so many imported diffusers give up in week two of a monsoon, while fibre wicks consistently for months. Further out is not infinite, though. A set of reeds that has served through several months and more than one refill has done its work.
Oil refill · reeds not included₹2,399Shop → 
Fresh Brew · six new fibre reedsfrom ₹849Shop → 
Day & Night duo · two sets of reeds₹1,498Shop →
SOSA reed diffuser range & prices (verified August 2026): alcohol-free, phthalate-free, paraben-free and IFRA-compliant compositions on a heat-stable coconut-derived (CCT) carrier, low-VOC, supplied in a refillable glass bottle with six fibre reeds; 50ml lasts 6–8 weeks and 130ml lasts 14–18 weeks. Morning Freshness (Malabar lemon · peppermint · Nilgiri eucalyptus) 50ml ₹749 · 130ml ₹1,249 · 9.0/10; Garden Bloom (British rose · night-blooming jasmine) 50ml ₹799 · 130ml ₹1,299 · 8.9/10; Evening Calm (Kashmir lavender · chamomile) 50ml ₹799 · 130ml ₹1,299 · 8.9/10; Fresh Brew (Coorg coffee · Kerala vanilla) 50ml ₹849 · 130ml ₹1,349 · 9.5/10; Mountain Breeze (Himalayan pine · sage · Indian cedar) 50ml ₹849 · 130ml ₹1,349 · 9.4/10. Reed diffuser refills are oil only — you reuse your own vessel and reeds: 300ml ₹2,399 (roughly 8–11 months) · 500ml ₹3,499 (roughly 14–18 months), about ₹7–8 per ml against ₹15–17 per ml for a 50ml bottle. Duo sets ₹1,498–₹1,598 for 2 × 50ml and ₹2,498–₹2,598 for 2 × 130ml. Strength figures are positions on SOSA’s own internal strength scale, not an industry standard. Replacement reeds are not sold as a separate SKU; SOSA guidance is to refresh reeds every few months. The reed line is separate from the water-based Hotel Collection for ultrasonic machines (15ml ₹299 · 100ml ₹999 · 300ml ₹1,799) and the two are not interchangeable. Diffusers: Boond 300ml ₹899 · Sukoon 500ml ₹1,899 · Megh 6L ₹3,499 · waterless Vaayu ₹11,999. 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.
Almost certainly not yet. A stalled reed and a spent reed are indistinguishable while they are standing in the bottle — both look damp, both smell of the composition, and both are delivering very little. The only reliable way to tell them apart is to flip all six and look again twenty-four hours later, because a stalled reed recovers and a spent one does not. That single day of patience is what stands between a free fix and an unnecessary purchase, and in my correspondence the flip resolves the great majority of cases where someone has already decided the reeds are finished.
Quick answers — read this first
Do not replace first. Flip all six reeds with gloves so both ends are coated, then leave it a full day before making any judgement.The 24-hour rule: the hour after a flip is deceptively strong and tells you nothing. The next morning is the honest reading.
Replace only if: the flip produced nothing at all within a day, and the reeds have done several months or crossed more than one refill.
The honest gap: SOSA does not sell replacement reeds separately. Refills are oil only. A new bottle brings six new fibre reeds with it.
The short answer
Short answer: no — flip first and judge tomorrow. A reed whose exposed end has accumulated the heavy, slow part of the composition has stopped moving oil, and it looks and smells exactly like a reed that has genuinely worn out. Flipping inverts that gradient and puts a clean surface into the air. If the room has changed by the following evening, the reeds were never the problem. If a full day after a flip produces nothing whatsoever, then and only then is replacement the right conclusion.
The mechanism: fibre reeds move oil by capillary action through a network of channels. Two things stop that. Saturation, where the reed is full and nothing more can climb because nothing is leaving — reversible in seconds by flipping. And genuine fouling, where months of residue and dust have narrowed the channels permanently — not reversible at all. The first is common; the second takes a long time to arrive.
Shop: the oil-only refill is ₹2,399 for 300ml and ₹3,499 for 500ml, and it does not include reeds. If your reeds are genuinely spent, a fresh 50ml — Morning Freshness ₹749, Evening Calm ₹799, Fresh Brew ₹849 — arrives with six new fibre reeds. Free shipping above ₹499.
In this guide
Oil only · no reeds included
300ml refill · ₹2,399
Comes with six new fibre reeds
Fresh Brew 50ml · ₹849
Two bottles, twelve reeds
Day & Night duo · ₹1,498
Straight answer
My oil is not going down — should I replace the reeds?
1. Flip all six, and do it properly. Gloves on, lift each reed straight out, invert it and stand it back so both ends have been coated in oil. Half-measures here corrupt the test: three flipped reeds and three not will give you an ambiguous reading tomorrow, which is the one outcome you do not want.
2. Ignore the next hour entirely. There is a genuine surge in the hour or two after a flip, as the saturated end you have just exposed releases what it has been holding. It is real and it is temporary, and treating it as the new baseline is how people end up disappointed by the same bottle twice in one week.
3. Judge at twenty-four hours, and judge from the doorway. Step outside for fifteen minutes, come back through the front door, and read the first three seconds. Your nose in your armchair will not give you a usable answer; adaptation sees to that.
4. If it recovered, the reeds are fine and the cadence was the fault. Flip weekly from now on. A bottle that stalls is a bottle whose reeds have been left in one orientation too long, and no purchase corrects that habit.
5. If a full day produced nothing, ask how old the reeds are. Reeds that have run through several months, or that have carried across more than one refill, are the plausible candidates for genuine replacement. Reeds that are three weeks old are not — look at placement, reed count and immersion depth instead.
6. Understand what replacement means here. We do not sell reeds as a separate item; the refills are oil only, and you reuse your own vessel and reeds. That is an honest gap in the range rather than a policy I am proud of. In practice new reeds arrive with a new bottle, which is why our guidance is to buy a fresh bottle periodically rather than to run one set of reeds indefinitely.
Composed and handmade in small batches in Pune, and a portion of every order supports girl-child education through Nanhi Kali.
2. Ignore the next hour entirely. There is a genuine surge in the hour or two after a flip, as the saturated end you have just exposed releases what it has been holding. It is real and it is temporary, and treating it as the new baseline is how people end up disappointed by the same bottle twice in one week.
3. Judge at twenty-four hours, and judge from the doorway. Step outside for fifteen minutes, come back through the front door, and read the first three seconds. Your nose in your armchair will not give you a usable answer; adaptation sees to that.
4. If it recovered, the reeds are fine and the cadence was the fault. Flip weekly from now on. A bottle that stalls is a bottle whose reeds have been left in one orientation too long, and no purchase corrects that habit.
5. If a full day produced nothing, ask how old the reeds are. Reeds that have run through several months, or that have carried across more than one refill, are the plausible candidates for genuine replacement. Reeds that are three weeks old are not — look at placement, reed count and immersion depth instead.
6. Understand what replacement means here. We do not sell reeds as a separate item; the refills are oil only, and you reuse your own vessel and reeds. That is an honest gap in the range rather than a policy I am proud of. In practice new reeds arrive with a new bottle, which is why our guidance is to buy a fresh bottle periodically rather than to run one set of reeds indefinitely.
Composed and handmade in small batches in Pune, and a portion of every order supports girl-child education through Nanhi Kali.
TL;DR: flip all six, ignore the first hour, judge at twenty-four hours from the doorway. Recovery means the reeds are fine. No change after a day, on reeds several months old or across more than one refill, means they are genuinely spent — and new reeds come with a new bottle, not with a refill.
The bottle most often wrongly condemned
SOSA Evening Calm · Kashmir lavender & chamomile ₹799 / 50ml
Our softest composition at 8.9 on SOSA's own internal scale at six reeds, built deliberately quiet because it is meant to help a bedroom get to sleep rather than announce itself. That softness means it is the bottle people most often decide has failed when it has merely stalled — run the flip and the twenty-four hour test before concluding anything. Six fibre reeds in the box; 50ml lasts 6–8 weeks, 130ml ₹1,299 lasts 14–18. Alcohol-free and phthalate-free on a heat-stable CCT base.
Part one — why the flip has to come before the verdict
The reason this order matters is that the two failures produce the same evidence. A saturated reed and a fouled reed both look damp, both smell of the composition when you hold them close, and both leave the room quiet. You cannot distinguish them by inspection; you can only distinguish them by their response to an intervention. Flipping is that intervention, it takes ten seconds, and it is the cheapest diagnostic in the whole category. Skipping it and buying instead is not merely wasteful — it teaches you nothing, so the same thing happens to the next bottle in six weeks' time.
1
CAUSE ONE · REVERSIBLE
Saturation — the reed is full, not finished
Over several weeks the exposed end of a reed keeps the heavier, slower molecules of the composition while the lighter ones leave into the room. The tip becomes a small reservoir of the least volatile part of the formula, evaporation from it slows, and because oil only climbs to replace what has left, the whole column stops moving. The bottle looks untouched. This is not damage — it is equilibrium, and it undoes itself the moment you invert the reed. The saturated end goes back into the oil, a clean surface meets the air, and delivery resumes. Everything about the reed is unchanged except its orientation. If your bottle has gone quiet and you have not flipped in a fortnight, this is overwhelmingly the likeliest explanation and it costs nothing to rule in or out.
The tell: a wet line sitting high and dark right up to the exposed tip. Full, not finished.
2
CAUSE TWO · NOT REVERSIBLE
Fouling — months of residue narrowing the channels
Oil refill₹2,399 · 300mlThe genuine end of a reed's life is different and slower to arrive. Household dust settles on an oily exposed surface, the heaviest fixative material builds up in the fibre channels rather than in a removable film, and the capillary path narrows until it no longer supports a useful flow. Flipping cannot help, because both ends are now compromised. This is why I say reeds are the consumable and the oil is the stable part — people habitually replace the oil and keep the reeds, when the physics runs the other way round. We use fibre rather than rattan precisely to push this point further out: rattan's natural pores clog readily in Indian humidity, which is why so many imported diffusers give up in week two of a monsoon, while fibre wicks consistently for months. Further out is not infinite, though. A set of reeds that has served through several months and more than one refill has done its work.
The tell: no change at all a full day after a proper flip, on reeds that are months old.
3
CAUSE THREE · MISDIAGNOSED
Not the reeds at all — supply, depth or the room
A third group of cases has nothing to do with reed condition. Too few reeds sharing the work will leave a wet line barely above the oil surface and a level that seems frozen — that is under-supply, and it is corrected by adding reeds, not replacing them. Too little immersion does the same: reeds leaning against the neck with only a centimetre in the oil cannot draw properly, and the fix is to stand them upright and deeper. And a bottle in dead air behind a sofa, or in a cold, sealed, low-traffic air-conditioned room, will genuinely consume slowly while remaining in perfect health. None of those are reed faults, and all three are commonly mistaken for one. Check them before you condemn anything, because each is free and each takes under a minute.
Part two — the twenty-four hour decision tree
This is the whole method in one table. Flip all six reeds properly, note the time, and then read the row that matches what you find the next evening. The timings here are SOSA working guidance from in-house testing and customer correspondence rather than instrumented results, but the shape of the response is consistent enough to decide by.
The flip trial
What happens after a flip, and what each outcome means
| Observation after the flip | When | What it means | Verdict on the reeds |
|---|---|---|---|
| Noticeable surge, then it settles ★ | 1–2 hours, then next day | Textbook. The bottle was stalled and is now delivering again | Keep them. Flip weekly from now on |
| Surge, then back to silence by morning | 24 hours | Supply recovered briefly; the room is not distributing it | Keep them — move the bottle instead |
| Nothing at one hour, clearly better next evening | 24–36 hours | Slow rewetting — common on a cold, sealed AC room | Keep them |
| Nothing at all, reeds under three months old | 24 hours | Look elsewhere: immersion depth, reed count, placement, sun | Keep them — this is not a reed problem |
| Nothing at all, reeds several months and 2+ refills old | 24 hours | Genuine fouling — channels narrowed beyond recovery | Replace, with a new bottle's set |
| Wet line still barely above the oil after a day | 24–48 hours | Under-wicking rather than stalling | Add two to four reeds first; replace only if that fails |
| The honest caveat: a flip trial cannot tell you anything useful if your own nose is the only instrument. Adaptation is at its strongest in the room you occupy most, so use the fifteen-minute doorway test or a returning household member to read the result. And run the trial on all six reeds — flipping half of them produces an intermediate outcome that answers nothing. | |||
Shop this guide
What the decision tree actually leads to
Oil refill · reeds not included₹2,399Shop → Fresh Brew · six new fibre reedsfrom ₹849Shop → Day & Night duo · two sets of reeds₹1,498Shop →
The SOSA principle
The reeds are the consumable. The oil is the stable part.
Most people replace the oil and keep the reeds indefinitely. The physics runs the other way: oil in a sealed bottle is patient, and fibre in a dusty room is not.
Part three — what a genuinely spent set of reeds is like
Since I am asking you to wait a day before condemning anything, I owe you a clear description of the case where replacement really is the answer. It looks like this. The reeds have been in service for several months — usually across at least two refills, sometimes three. The exposed ends have darkened in a way that a flip does not lighten, and the fibre feels slightly stiff or gritty rather than pliant. You have flipped all six properly and a full day has passed with no change the doorway test can find. The oil level has been static for weeks in a room that is neither especially cold nor especially sealed. Taken together, that pattern is the end of a reed's working life, and no amount of patience will retrieve it. One set of reeds is not meant to run forever, and pretending otherwise is how a good refill gets blamed for a bad result.
Our guidance is to refresh reeds every few months rather than to wait for that endpoint, and I would rather state the awkward part directly: we do not sell replacement reeds as a separate item. The refills are oil only — you reuse your own glass vessel and your own reeds — and there is no reed SKU to add to the basket. That is an honest gap in the range. It exists for boring reasons about small-batch production, and I am not going to dress it up as a design choice. In practice it means new reeds arrive with a new bottle, so the sensible pattern for most households is to alternate: run a bottle, refill it once or twice on the same reeds, then buy a fresh bottle when the reeds have had enough and start the cycle again with the vessel you like best.
There is one more scenario worth naming, because it produces a confusing version of the same symptoms. If you refill with a different scent on the old reeds, you will get a muddled, indistinct result that is easy to mistake for dead fibre. The reeds retain a substantial quantity of the previous composition inside them and will keep releasing it for weeks; Kashmir lavender fighting Coorg coffee in the same six reeds reads as a fault when it is really a collision. If you are changing scent, that is exactly the moment to start with new reeds. Where the two compositions share a note the seam is far less obvious — Morning Freshness and Mountain Breeze meet on green eucalyptus, Fresh Brew and Garden Bloom meet on warmth and soft musk — but even then a clean set gives the new bottle a fair hearing.
A stalled reed and a spent reed look identical. Only tomorrow can tell you which one you have.
— Sonal Sahani, SOSA
Part four — how to actually get new reeds, and what it costs
Given that reeds are not sold on their own, here is the practical arithmetic for each situation, ordered from free upward. Note that the first three rows cost nothing at all, and that a good number of households never reach the fourth in a given season.
The replacement edit
Situation by situation, with what it actually costs
| Your situation | Do the reeds need replacing? | What to do instead, or as well | Cost |
|---|---|---|---|
| Bottle under six weeks old, gone quiet ★ | No — almost never | Flip all six, judge at 24 hours from the doorway | Free |
| Wet line barely above the oil | No — this is under-supply | Stand reeds deeper and upright; add two to four | Free · shortens the bottle a little |
| Reeds strong when held, room silent | No — supply is intact | Move into passing air near a doorway, waist to chest height | Free |
| Reeds several months old, flip did nothing | Yes | A fresh 50ml arrives with six new fibre reeds | From ₹749 · 6–8 weeks |
| Reeds fine, oil nearly gone | No | 300ml oil refill — pour to the neck, return reeds, flip once | ₹2,399 · roughly 8–11 months |
| Changing to a different scent | Yes — start clean | New bottle rather than refilling over the old composition | From ₹749 |
| Two rooms, and you want spare reeds in hand | Not yet, but plan for it | A duo set brings two bottles and twelve reeds | ₹1,498 · 2 × 50ml |
Honest notes for buyers: SOSA does not sell replacement reeds as a separate SKU — this is a genuine gap in the range and we would rather say so than imply otherwise. Refills are oil only at 300ml ₹2,399 (roughly 8–11 months) and 500ml ₹3,499 (roughly 14–18 months), around ₹7–8 per millilitre against ₹15–17 for a 50ml bottle; you reuse your own glass vessel and your own reeds, and no reeds are included. Our guidance is to refresh reeds every few months, which in practice means buying a fresh bottle periodically. The reed-life windows and 24-hour timings on this page are SOSA working guidance from in-house testing and customer correspondence, not laboratory measurements. Reed oil never goes into a Sukoon, Boond or Megh, and the water-based Hotel Collection never goes into a reed bottle. Wear gloves for flipping, stand the bottle on a tray because the oil marks wood and stone, and keep everything away from children and pets.
Oil only — and we say so before you buy
SOSA reed diffuser refill ₹2,399 / 300ml
The refill is exactly what its name says and nothing more: the same composition as the bottles, in a larger volume, with no vessel and no reeds. That is why the sequence on this page matters — establish that your reeds are healthy before you buy oil, because pouring fresh oil onto fouled fibre produces a disappointing result and an unfair verdict on the refill. Remove the reeds, pour to the neck, return them, and flip once so both ends are coated. 500ml ₹3,499 runs roughly 14–18 months at around ₹7 per millilitre.
SS
ISIPCA
Versailles
Versailles
A note from Sonal
The single most common repair I recommend is free, takes ten seconds, and involves no product from us at all. That is an uncomfortable position for a founder to write from, and it is also the correct one. If someone buys a new bottle because they did not know to flip the old one, I have not made a sale — I have lost a customer slowly. They will conclude the format is unreliable, and they will be right to, because nobody told them how it works.
What I would genuinely like to fix is the reed gap. Not selling replacement reeds is not a strategy; it is an artefact of making everything in small batches in Pune and not yet having solved the packaging and the shipping economics of a very light, very cheap item. Until that changes I will keep writing it down plainly on every page where it is relevant, rather than letting people assume a refill includes them and discover otherwise on their kitchen counter.
In the meantime the pattern that works is unglamorous: flip weekly, refill once or twice on the same reeds, then buy a fresh bottle when the fibre has had enough and let the vessel you like best carry on. That is roughly a year of scent for the price of one bottle and two refills, and it is what I do at home. A part of every order funds a girl's classroom through Nanhi Kali.
Frequently asked questions
Do SOSA reed diffuser refills come with new reeds?
No. The refills are oil only — 300ml ₹2,399 and 500ml ₹3,499 — and you reuse your own glass vessel and your own reeds. We do not sell replacement reeds separately either, which is an honest gap in the range. New fibre reeds arrive with a new bottle, and our guidance is to refresh them every few months.
How long do fibre reeds last before they need replacing?
Our working guidance is to refresh them every few months. Fibre outlasts rattan considerably in Indian conditions — rattan's natural pores clog readily in humidity — but it is still the consumable part of the system. Reeds that have carried through two or more refills and no longer respond to a flip have reached the end of their useful life.
Can I wash or clean reed diffuser sticks to revive them?
No — washing does not restore capillary flow, because the material that narrows the channels is inside the fibre rather than sitting on the surface. A flip is the only recovery that works, and it works on saturation rather than on fouling. If a full day after a proper flip changes nothing on months-old reeds, they are done.
Can I reuse my reeds with a different SOSA scent?
You can, but I would not. Reeds hold a meaningful amount of the previous composition and keep releasing it for weeks, so a new scent poured over old reeds reads muddled — and that muddle is easily mistaken for a faulty bottle. If you are changing character entirely, start with a new bottle's reeds. Two scents that share a note collide far less than two that do not.
The oil is not going down at all. Is the bottle faulty?
Very unlikely. A 50ml consumes only about six to eight millilitres a week, which is nearly invisible before week four, so a "static" level in week two is usually just a level you cannot read. Flip all six reeds, tape the glass with today's date, and look again in a fortnight before drawing any conclusion at all.
Reed replacement · 2027
Flip first. Judge tomorrow. Replace only what a day has proved is finished
Every SOSA reed diffuser ships with six fibre reeds — fibre rather than rattan, because rattan's pores clog in Indian humidity — on an alcohol-free, phthalate-free CCT base tested through 45°C heat and 85% monsoon humidity. 50ml from ₹749 lasts 6–8 weeks; 130ml from ₹1,249 lasts 14–18. Oil-only refills ₹2,399 for 300ml and ₹3,499 for 500ml; reeds are not included and are not sold separately. Free shipping above ₹499, and a portion of every order supports girl-child education through Nanhi Kali.
Shop reed diffusers → Oil refill ₹2,399
Continue the read
More on reeds, levels and quiet bottles
- Why are my reeds not absorbing enough oil? — immersion depth and reed count, both free to correct.
- How do you know it is actually working? — the three tests to run before you spend anything.
- Why is my reed diffuser oil not going down? — the three states a static level can mean.
- Lasting too long but not smelling — the complete guide, plus why can't I smell my reed diffuser?
- 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, on when a static oil level indicates reeds that need replacing and when it does not. The twenty-four hour flip trial, the decision tree, the reed-life windows and the "several months, two or more refills" threshold are SOSA working guidance developed from in-house testing and customer correspondence in Indian homes, not laboratory measurements; results vary with room temperature, humidity, dust, ventilation and reed count. Weekly oil-consumption figures are arithmetic from the stated bottle life. Replacement reeds are not sold as a separate SKU and refills contain oil only.SOSA reed diffuser range & prices (verified August 2026): alcohol-free, phthalate-free, paraben-free and IFRA-compliant compositions on a heat-stable coconut-derived (CCT) carrier, low-VOC, supplied in a refillable glass bottle with six fibre reeds; 50ml lasts 6–8 weeks and 130ml lasts 14–18 weeks. Morning Freshness (Malabar lemon · peppermint · Nilgiri eucalyptus) 50ml ₹749 · 130ml ₹1,249 · 9.0/10; Garden Bloom (British rose · night-blooming jasmine) 50ml ₹799 · 130ml ₹1,299 · 8.9/10; Evening Calm (Kashmir lavender · chamomile) 50ml ₹799 · 130ml ₹1,299 · 8.9/10; Fresh Brew (Coorg coffee · Kerala vanilla) 50ml ₹849 · 130ml ₹1,349 · 9.5/10; Mountain Breeze (Himalayan pine · sage · Indian cedar) 50ml ₹849 · 130ml ₹1,349 · 9.4/10. Reed diffuser refills are oil only — you reuse your own vessel and reeds: 300ml ₹2,399 (roughly 8–11 months) · 500ml ₹3,499 (roughly 14–18 months), about ₹7–8 per ml against ₹15–17 per ml for a 50ml bottle. Duo sets ₹1,498–₹1,598 for 2 × 50ml and ₹2,498–₹2,598 for 2 × 130ml. Strength figures are positions on SOSA’s own internal strength scale, not an industry standard. Replacement reeds are not sold as a separate SKU; SOSA guidance is to refresh reeds every few months. The reed line is separate from the water-based Hotel Collection for ultrasonic machines (15ml ₹299 · 100ml ₹999 · 300ml ₹1,799) and the two are not interchangeable. Diffusers: Boond 300ml ₹899 · Sukoon 500ml ₹1,899 · Megh 6L ₹3,499 · waterless Vaayu ₹11,999. 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.