My Reed Diffuser Finishes Very Quickly in Delhi Summer — Is the Heat Causing It?

My Reed Diffuser Finishes Very Quickly in Delhi Summer — Is the Heat Causing It?

 

★ ★ Warmth raises the evaporation rate, so the same bottle empties sooner in summer — a duration effect, not a faultReed 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 · why summer shortens a bottle
Yes, the heat is doing it — and the fix is a bigger bottle and a refill on the shelf, not a different scent and certainly not more reeds
★ ★ ★ ★ ★
★★★★★
"Second summer with the same bottle size and the same thing happened — gone in five weeks instead of eight. Switching to the 130ml solved it. Nothing else needed changing."
Rohit B. Gurgaon
Mountain Breeze 130ml · summer switch
★★★★★
"I had been adding reeds every summer because it was running out, which I now understand was making it run out faster. Six reeds, bigger bottle, done."
Aparna S. Noida
Morning Freshness 130ml · stopped adding reeds
★★★★★
"Mine was sitting on the console right under the west window. Moved it two feet into the room and the difference in how long it lasted was obvious by the next bottle."
Karan M. Dwarka
Garden Bloom 50ml · moved off the sill
★★★★★
"Was convinced the ₹849 one would last longer than the ₹749 one. It does not — the price is the composition, not the duration. Wish I had known that two bottles ago."
Devika R. Rohini
Learned the hard way
★★★★★
"The 300ml refill was the actual answer for me. Two summers of buying new bottles, and the arithmetic on the refill made me feel silly for not doing it earlier."
Sameer A. Faridabad
Oil refill 300ml ₹2,399
★★★★★
"Useful to be told plainly that a shorter summer bottle is normal physics rather than a bad batch. I had emailed twice assuming something was wrong with mine."
Nupur C. Vasant Kunj
Evening Calm 50ml · summer
★★★★★
"Second summer with the same bottle size and the same thing happened — gone in five weeks instead of eight. Switching to the 130ml solved it. Nothing else needed changing."
Rohit B. Gurgaon
Mountain Breeze 130ml · summer switch
★★★★★
"I had been adding reeds every summer because it was running out, which I now understand was making it run out faster. Six reeds, bigger bottle, done."
Aparna S. Noida
Morning Freshness 130ml · stopped adding reeds
★★★★★
"Mine was sitting on the console right under the west window. Moved it two feet into the room and the difference in how long it lasted was obvious by the next bottle."
Karan M. Dwarka
Garden Bloom 50ml · moved off the sill
★★★★★
"Was convinced the ₹849 one would last longer than the ₹749 one. It does not — the price is the composition, not the duration. Wish I had known that two bottles ago."
Devika R. Rohini
Learned the hard way
★★★★★
"The 300ml refill was the actual answer for me. Two summers of buying new bottles, and the arithmetic on the refill made me feel silly for not doing it earlier."
Sameer A. Faridabad
Oil refill 300ml ₹2,399
★★★★★
"Useful to be told plainly that a shorter summer bottle is normal physics rather than a bad batch. I had emailed twice assuming something was wrong with mine."
Nupur C. Vasant Kunj
Evening Calm 50ml · summer
SOSA Mountain Breeze reed diffuser, 130ml for a hot Delhi summerMountain Breeze ₹849 SOSA Morning Freshness reed diffuser, Malabar lemon and peppermintMorning Freshness ₹749 SOSA Evening Calm reed diffuser for a Delhi bedroomEvening Calm ₹799 SOSA reed diffuser oil-only refill bottleOil refill 300ml ₹2,399 SOSA Fresh and Grounded reed diffuser duo setFresh & Grounded duo ₹1,548
★ ★ The summer size, 130ml ₹1,349 Refill instead of rebuying ₹2,399
✓ Heat raises the evaporation rate — the bottle shortens, the room does not fail ✓ Size buys duration, never reach — and more reeds shorten it further ✓ Free shipping above ₹499 · a portion of every order funds girl-child education

 

Founder Diaries · Delhi NCR · Heat and Bottle Life
By Sonal Sahani · ISIPCA Versailles 9 min read Updated August 2026
Yes. The heat is causing it, and I can tell you that without asking a single follow-up question about your flat. Evaporation is a temperature-driven process, so a warm room takes oil off the reeds faster than a cool one, and the same bottle finishes sooner. That is not a fault, not a bad batch and not a change in the product — and what it alters is duration, not strength and not reach. The room does not stop working; the calendar shortens. So the two things worth changing are the size you buy and how you plan the next one, and the two worth leaving alone are the scent and the reed count. Most people in your position change exactly the wrong two.
Quick answers — read this first
Yes, warmth is the reason. Oil leaves a reed by evaporating off the exposed length, and evaporation runs faster in warmer air. A 50ml rated 6–8 weeks lands at the short end of that range, or a little under, through a hot NCR summer.

Change the size, not the scent. Mountain Breeze 130ml ₹1,349 or Morning Freshness 130ml ₹1,249 — 14–18 weeks against 6–8, at the same projection.

Do not add reeds. Reed count is the volume control and it costs bottle life roughly in proportion: nine reeds turns eight weeks into about five on a 50ml. In a hot month that is the exact opposite of what you want.

Plan the refill rather than being surprised by it. A 300ml oil-only refill is ₹2,399 for roughly 8–11 months, about ₹7–8 per ml against ₹15–17. You reuse your own glass and reeds.
The short answer
Short answer: the heat is the cause, and the fix is a bigger bottle. For a Delhi living room or bedroom of roughly 150–250 sq ft, buy Mountain Breeze 130ml at ₹1,349 — 14–18 weeks against the 6–8 you are getting now — and stand it on a tray, out of direct sun and out of the air-conditioner's blow. Morning Freshness 130ml at ₹1,249 behaves identically on duration if you want to spend less.
The mechanism: fragrance oil climbs six fibre reeds by capillary action and leaves as vapour from the exposed length. Vapour pressure rises with temperature, so a warm room takes more off that surface per hour. Nothing about the composition, the reeds or the bottle has changed. Add direct sunlight on the glass or a draught across the reeds and it accelerates further, which is why placement matters more in summer than in any other season.
Shop: Mountain Breeze 50ml ₹849 · 130ml ₹1,349 · Morning Freshness ₹749 · ₹1,249 · oil refill 300ml ₹2,399 · 500ml ₹3,499. Free shipping above ₹499.
In this guide
14–18 weeks instead of 6–8, same projection
Mountain Breeze 130ml · ₹1,349
Roughly ₹7–8 per ml against ₹15–17
Oil refill 300ml · ₹2,399
The change that costs nothing: six reeds, never nine
Morning Freshness 130ml · ₹1,249
Straight answer
Is Delhi summer heat the reason my reed diffuser is finishing so quickly?
1. Yes, and the mechanism is straightforward. A reed diffuser works by evaporation off exposed reed surface. Warmer air means faster evaporation, so a bottle that runs 6–8 weeks in a mild month will sit at the short end of that range, or slightly below it, through a hot NCR summer. Nothing has gone wrong.

2. It is a duration effect, not a strength effect. Faster evaporation shortens the bottle; it does not make the room dramatically louder, because a hot Delhi flat is usually an air-conditioned one, and moving air carries scent away as fast as heat releases it. The shorter calendar arrives without a proportional gain in the room. Frustrating, and completely normal.

3. Change the size. 130ml at ₹1,249–₹1,349 holds 14–18 weeks against 6–8 at 50ml. It does not project further, cover more floor or smell stronger — size buys duration and nothing else, which happens to be precisely the thing summer is taking from you.

4. Do not add reeds. Reed count is the only true volume control, and it costs bottle life roughly in proportion. Nine reeds turns about eight weeks into about five on a 50ml; ten turns it into four or five. If the complaint is that the bottle empties too fast, adding reeds is the one adjustment guaranteed to make it worse.

5. Do not switch scent hoping for longevity. All five reed compositions run to the same published ranges — 6–8 weeks at 50ml, 14–18 at 130ml. Fresh Brew at ₹849 does not outlast Morning Freshness at ₹749. The price difference is the composition, not the calendar.

6. Move it off the heat and out of the draught. Direct sun through glass, a west-facing sill, the top of a fridge or set-top box, and the air-conditioner's direct blow all accelerate the loss. Waist-to-chest height, two feet into the room, clear space, on a tray.

7. Plan the refill instead of rebuying. A 300ml oil-only refill is ₹2,399 and covers roughly 8–11 months; 500ml is ₹3,499 for roughly 14–18. Reeds are not included and are not sold separately, so refresh your own every few months.

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: heat raises the evaporation rate, so the bottle finishes sooner. That is duration, not failure. Buy 130ml at ₹1,349 instead of 50ml, keep six reeds, keep the scent you like, move the bottle out of the sun and out of the AC's blow, and put a ₹2,399 refill on the shelf so the next one is not a surprise.
SOSA Mountain Breeze reed diffuser 130ml, the size that lasts through a hot Delhi summer
The one change that answers the question you asked
SOSA Mountain Breeze 130ml · Himalayan pine, sage & Indian cedar ₹1,349 / 130ml
Same composition, same six fibre reeds, same projection into the room — and 14–18 weeks of it instead of 6–8. That is the whole argument for the larger bottle: a 130ml is a duration purchase, not a strength purchase, and duration is exactly the variable a hot flat puts under pressure. Pine and sage over Indian cedar, dry rather than sweet, at 9.4 on SOSA's own internal strength scale at six reeds — a position on our scale rather than an industry standard. Alcohol-free, phthalate-free and paraben-free on a heat-stable coconut-derived CCT carrier, tested through 45°C heat. Fibre reeds rather than rattan, because rattan's pores clog. 50ml is ₹849 if you prefer the smaller format. Flip weekly with gloves; stand it on a tray, because the oil marks wood and stone.
Shop Mountain Breeze 130ml →

Part one — why warmth shortens a bottle

There is no mystery here and no manufacturing variable. Three things set the rate at which oil leaves the bottle: exposed reed surface, air movement across it, and temperature. Summer changes the third and, in an air-conditioned Delhi flat, usually the second as well.

1
THE MECHANISM · WARMER AIR TAKES MORE PER HOUR
Evaporation is temperature-driven, and a reed diffuser is nothing but evaporation
Fragrance oil sits in a glass bottle on a coconut-derived CCT carrier. Six fibre reeds stand in it and draw the oil up by capillary action, and at the exposed length above the neck it leaves the surface into the room. That is the entire product — no fan, no heat element, no switch, nothing to fail. Because the only step is evaporation, anything that speeds evaporation shortens the bottle, and warmth is the most reliable of those things. A room that spends its day warm takes oil off the reeds faster than the same room in a mild month, with no change to the oil, the reeds or the bottle. That is why the published figure is a range: 6–8 weeks at 50ml, 14–18 at 130ml. The short end is a hot flat and the long end is a cool one.
What this is not: a leak, an evaporated batch, a loose cap or a weaker oil. If the level is dropping, the product is working.
2
DURATION, NOT STRENGTH
Faster loss does not hand you a proportionally louder room
SOSA Morning Freshness reed diffuser, 130ml for a hot Delhi flatMorning Freshness₹1,249 · 130mlHere is where the intuition breaks. If more oil is leaving per week, surely the room should smell stronger? Sometimes, mildly, in the first days. But a hot NCR flat is usually a cooled one, and a running air-conditioner adds air movement, which carries scent away from where it is released. The two effects work against each other: heat puts more into the air, the draught takes more of it out of the zone around the bottle. What people report is a room that smells about as it always did and a bottle that reaches the bottom weeks early — which feels like a defect and is simply two mechanisms doing what they do. The reframe worth keeping: you are not losing performance, you are buying fewer weeks per rupee, and only the second problem has a purchase attached to it.
The check: if the room still smells of it in week three, nothing is wrong with the fragrance. Only the calendar has changed.
3
THE MULTIPLIERS · SUN AND DRAUGHT
Where the bottle stands can cost you more weeks than the season does
Ambient warmth is the baseline. What turns a mildly shorter bottle into a startlingly short one is almost always a placement decision made in a cooler month and never revisited. Direct sunlight through glass is the worst of them — a bottle on a west-facing sill spends the afternoon considerably warmer than the room it stands in. Next: the top of a refrigerator, a set-top box, a router or anything else that runs warm all day. Then the draught cases — directly under an air-conditioner's blow, in front of a pedestal fan, or beside a door onto a hot balcony. Each strips the reeds faster than still air does, and the effect stacks with the heat. Two feet further into the room, at waist to chest height, with clear space around the reeds, is a free change that often buys back a week.

Part two — what to change and what to leave alone

Six responses to a fast-emptying bottle in summer. Two work, one is free, and three are neutral or actively counterproductive.

Summer adjustments · what each one actually does to the calendar
The change, the effect on bottle life, the effect on the room, and my verdict
The adjustment Effect on how long the bottle lasts Effect on how the room smells Cost Verdict
Move it off the sill, off warm appliances, out of the AC's blow ★ Often buys back a week or more on a 50ml Usually improves it — scent stops being blown past you ₹0 Do this before spending anything
Buy 130ml instead of 50ml 14–18 weeks against 6–8 — the direct answer No change at all. Same projection at six reeds ₹1,249–₹1,349 The correct purchase for this problem
Switch to an oil-only refill when the bottle empties 300ml covers roughly 8–11 months of topping up No change. Same oil, your own glass and reeds ₹2,399, about ₹7–8 per ml The right move from your second bottle onward
Add reeds — eight, nine, ten in the neck Shortens it further: nine reeds ≈ five weeks instead of eight on a 50ml Louder, yes — but you did not ask for louder ₹0, and it costs you weeks The one change to avoid here
Switch to a "stronger" or costlier scent None. All five run 6–8 weeks at 50ml and 14–18 at 130ml Different character, not more hours ₹749–₹849 spent for nothing Buy the scent you like, for that reason only
Take reeds out to slow it down Stretches the bottle, genuinely Quieter in proportion — three reeds is a much smaller room presence ₹0 Fair if you want a whisper. Most people do not
The honest caveat: none of these stops the heat. A hot flat will always take oil faster than a cool one, and the 130ml is not immune — it simply starts from 14–18 weeks instead of 6–8, so the same proportional loss hurts less. If what you actually want is fragrance only at certain hours rather than continuously, no reed bottle solves that at any size, and a Sukoon at ₹1,899 with its 2H and 4H timers is the honest answer instead.
Shop this guide
The 130ml sizes, and the refill that follows them
SOSA Mountain Breeze reed diffuser 130mlMountain Breeze 130ml · dry, woody, 14–18 weeks₹1,349Shop → SOSA Morning Freshness reed diffuser 130mlMorning Freshness 130ml · the least expensive large bottle₹1,249Shop → SOSA reed diffuser oil-only refill 300mlOil refill 300ml · roughly 8–11 months₹2,399Shop →
The SOSA principle
Reeds are the volume control; the bottle is the duration control. Summer attacks duration, so answer it with volume of oil — never with more reeds.
Which is why the bigger bottle is honest here and would be dishonest on a page about a weak room. Same product, different question.

Part three — when it is placement, not the season

There is a version of your question where the answer is not a purchase at all, and it deserves separating out before you spend ₹1,349. A hot summer takes a 50ml from the long end of 6–8 weeks to the short end, and sometimes a little under. It does not take it to two and a half weeks. If your bottle is emptying in under three weeks, something in the room is doing far more work than the weather — and it is almost always one of three things: direct sunlight for part of the day, the direct path of an air-conditioner or fan, or more than six reeds in the neck. All three are free to correct, and worth correcting before any order, because the same correction applies to the next bottle too.

The draught case deserves its own paragraph, because in an NCR flat it is nearly universal and almost never suspected. Air moving across the reeds carries away the vapour that has just formed, which lets more form immediately — the same reason wet clothes dry faster in a breeze. A bottle in the AC's direct throw is therefore being emptied and stripped at once, and what it releases is pushed straight past the sitting area to wherever the air is going: the shortest possible bottle and the least noticeable room, which is the worst combination available. Move it to a spot with gentle incidental traffic instead — near a doorway you walk through, with air passing occasionally rather than constantly.

And there is one situation where the honest recommendation is a different product. If what annoys you is the bottle running all day in a room nobody is in — the drawing room while you are at work — then no size fixes that, because a reed diffuser has no off switch by design. The trigger for a Sukoon at ₹1,899 is control, not strength: 270–320 sq ft, 16–18 hours on low, a remote and steady, 2H and 4H timers, three 15ml Hotel Collection fragrances in the box. It adds moisture, because aerosolising water is how an ultrasonic delivers fragrance. What it is not is a bigger reed diffuser: reed oil never goes into a machine and the water-based Hotel Collection never goes into a reed bottle.

A bottle finishing early in a hot month is the product working, not failing. Buy back the weeks with volume of oil, and leave the reeds at six.
— Sonal Sahani, SOSA

Part four — the summer plan, costed

Six versions of the same Delhi situation, with the arithmetic written out. Every row assumes six reeds.

Buy once, plan the rest
What to order, what it costs, and how many weeks it should give you
Where you are What to order The arithmetic Weeks you should expect
One room, 50ml gone in five weeks, everything else fine ★ The same scent in 130ml, six reeds, off the sill ₹1,349 once 14–18, and the short end in a hot month
Same, but you would rather spend less this month Morning Freshness 130ml — the least expensive large bottle ₹1,249 once 14–18. Identical duration to the ₹1,349 bottles
Two rooms, both emptying fast Two 130ml — one bright, one dry, so the doorway seam is clean ₹1,249 + ₹1,349 = ₹2,598 14–18 each, running together
You already own bottles you like and just want them to cost less 300ml oil refill into your own glass and reeds ₹2,399 for roughly 8–11 months, ≈ ₹7–8 per ml Refill to the neck as each bottle runs low
Heavy user, two or three bottles going year-round 500ml oil refill and a note in your calendar ₹3,499 for roughly 14–18 months Stops the summer top-up being a surprise purchase
The bottle is gone in under three weeks Nothing yet. Count the reeds, move it out of the sun and out of the draught ₹0 today Fix that first, or the next bottle does the same
Honest notes for buyers: longevity figures are typical ranges, not guarantees — 50ml lasts 6–8 weeks and 130ml lasts 14–18 at six reeds, and both run at the shorter end in a warm room, in a draught or with extra reeds. A larger bottle buys duration only; it does not project further or smell stronger. Reed count is the volume control and costs bottle life roughly in proportion. SOSA has no 100ml reed diffuser; the sizes are 50ml and 130ml. Refills are oil only — vessel and reeds are not included, and replacement reeds are not sold separately. Reed oil never goes into an ultrasonic machine and the water-based Hotel Collection never goes into a reed bottle. A reed diffuser adds fragrance to a room; it does not clean, purify or filter air, remove or neutralise any existing smell, or reduce humidity. Strength figures are positions on SOSA's own internal scale at six reeds, not an industry standard. Fragrance oil is flammable — keep bottles out of direct sunlight and away from open flame, children and pets, and stand them on a tray. Made in small batches in Pune; free shipping above ₹499, and a portion of every order supports girl-child education through Nanhi Kali.
SOSA reed diffuser oil-only refill 300ml, for topping up through a hot summer
The part of the answer that saves money rather than spending it
SOSA reed diffuser refill · oil only ₹2,399 / 300ml
If summer is going to take a bottle faster every year, stop buying new glass every time. A 300ml refill is ₹2,399 and covers roughly 8–11 months; 500ml is ₹3,499 for roughly 14–18 months. That is about ₹7–8 per ml against ₹15–17 per ml for a 50ml bottle — up to around 55% less for the same oil. The method takes two minutes: remove the reeds, pour to the neck, return them, flip once so both ends are coated. Wear gloves. What is not in the box: no vessel, and no reeds. Replacement reeds are not sold separately at all — an honest gap rather than something I will talk around. Keep the reeds from an earlier bottle and refresh them every few months.
Shop the oil refill →
SS
ISIPCA
Versailles
A note from Sonal

We test every composition through 45°C, and not for durability in the sense people usually mean. Heat does two things to a fragrance oil, and only one of them is about how fast it leaves. A phthalate solvent pushes fragrance hard off a reed and wins the first week convincingly, then degrades in sustained heat and turns acrid somewhere around week six. Anyone who has kept a diffuser through a north Indian summer has smelt that turn.

We are phthalate-free on a heat-stable coconut-derived CCT base, and the trade is worth stating plainly: a smaller opening week, and a longer, flatter plateau that still smells like itself at the end of the bottle. It does not exempt us from physics — our bottles empty faster in the heat too, exactly as this page describes.

What I will not do is sell you a solution to that. There is no summer formulation, no heat-resistant reed, no larger bottle that resists evaporation. There is a 130ml that starts with more oil in it, a refill that makes the oil cheaper, and a shelf two feet from the window that costs nothing. Made in small batches in Pune, and a part of every order funds a girl's classroom through Nanhi Kali.

Frequently asked questions

Does heat really make a reed diffuser finish faster?
Yes. A reed diffuser releases fragrance purely by evaporation from the exposed length of the reeds, and evaporation runs faster in warmer air. A 50ml bottle rated 6–8 weeks tends to land at the short end of that range through a hot summer. Nothing is wrong with the bottle — the level dropping is the product doing its only job.
Should I add reeds in summer to compensate?
No — that is the change most likely to make things worse. Reed count is the volume control and costs bottle life roughly in proportion: nine reeds turns about eight weeks into about five on a 50ml. It accelerates exactly the thing you are unhappy about. Keep six.
Does a more expensive scent last longer?
No. All five compositions run to the same ranges — 6–8 weeks at 50ml, 14–18 at 130ml. Fresh Brew at ₹849 does not outlast Morning Freshness at ₹749; the price reflects the composition. Buy the scent you want to live with, and change the size if you want more weeks.
Is the 130ml stronger than the 50ml?
No, and I would rather say it bluntly than let the larger price imply otherwise. At six reeds both bottles project the same into a room. The 130ml holds more oil, so it lasts 14–18 weeks against 6–8. Size buys duration, never reach. If you want a stronger room, that comes from reed count, position and adding a second source — not from a bigger reservoir.
Is a refill cheaper than buying another bottle?
Considerably. A 300ml oil-only refill at ₹2,399 works out at roughly ₹7–8 per ml against ₹15–17 per ml for a 50ml bottle, and covers about 8–11 months. It contains no glass vessel and no reeds — replacement reeds are not sold separately — so you reuse your own and refresh them every few months.
Delhi NCR · summer · 2026
The heat shortens the bottle, not the product — so buy the size, not the story
130ml holds 14–18 weeks against 6–8 at 50ml, at the same projection with six reeds. Keep the scent, keep the reed count at six, move the bottle out of direct sun and out of the air-conditioner's blow, and put a ₹2,399 oil refill on the shelf. Reed diffusers 50ml ₹749–₹849 · 130ml ₹1,249–₹1,349. Made in Pune, tested through 45°C heat and 85% humidity. Free shipping above ₹499; a portion of every order supports girl-child education through Nanhi Kali.
Mountain Breeze 130ml ₹1,349 → Oil refill 300ml ₹2,399
Continue the read
More on Delhi NCR, heat and sealed seasons
Editorial standards & sources
About this guide: Written by Sonal Sahani, ISIPCA Versailles-trained founder and perfumer at SOSA Home & Body, on why a reed diffuser empties faster in a hot flat and what should and should not be changed in response. The situation described is a general one Delhi NCR readers may recognise; it is not drawn from any customer, forum or third-party discussion. No temperature, humidity, rainfall or air-quality figure is quoted for any city — the only test conditions stated are SOSA's own, 45°C and 85% relative humidity. Longevity figures are typical ranges rather than guarantees. 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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