Can I use raw essential oils in an ultrasonic diffuser? I do not recommend it in SOSA units. Raw essential oils, perfumes and carrier oils are thick or solvent-heavy; they sit on the misting plate, clog it and can damage the unit. Use SOSA water-based fragrance instead.
How many drops of fragrance do I need? Only a few. Start with a small amount in a full tank of water, then adjust to taste. A little water-based fragrance goes a long way, which is why even the 15ml bottle lasts many fills.
What to use, and how much
Here is the simple, honest method that keeps a SOSA diffuser working and smelling wonderful.
Start conservative on the drops. A little goes a long way, so add a few, run it, and top up the scent only if you want it stronger. This is also why the sizing is generous: the 15ml (₹299) is a try-a-scent bottle, the 100ml (₹999) is the everyday value, and the 300ml (₹1799) is the lowest cost per ml for daily diffusing.
The Hotel Collection comes in seven hotel-inspired scents so you can build a small wardrobe by mood - a clean white tea for the bedroom, a warm amber for the evening, a bright citrus for entertaining. These are our own interpretations of the styles those hotels are known for; SOSA is not affiliated with or endorsed by the hotels named, and the names only describe the scent style.
Think of it the way a bartender thinks of a cocktail: the water is the base, the fragrance is the accent. You are not trying to fill the tank with scent - you are seasoning a large volume of water so the mist carries a whisper of it into the whole room.
Why raw oils clog the plate
I know the internet is full of "best essential oils for your diffuser" lists. I will not publish one, because in an ultrasonic diffuser it is bad advice. Here is the physics, plainly.
An ultrasonic diffuser has a small metal disc - the misting plate - that vibrates millions of times a second to shatter water into a fine mist. Water does this beautifully. Thick liquids do not.
Reality: raw essential oils, perfumes and carrier oils are far thicker or more solvent-heavy than water. They do not atomise cleanly. They film over the plate, dull its vibration, clog it, and can permanently damage the unit. A stronger scent is not worth a dead diffuser.
| Liquid | Behaviour on an ultrasonic plate |
|---|---|
| SOSA water-based fragrance in water | Atomises cleanly; scent rides the cool mist; plate stays clear. |
| Raw essential oil (neat) | Too thick to atomise; films and clogs the plate; can damage the unit. |
| Perfume / EDP | Solvent-heavy and often oily; not made for a water tank; risks residue. |
| Carrier oil (jojoba, almond) | Very thick; coats the plate; a classic cause of "it stopped misting". |
And one honest boundary: a fragrant mist makes a room smell like a calm, expensive hotel. It does not purify the air or replace ventilation. Buy it for the pleasure of the scent, not as an air cleaner.
The SOSA range
SOSA makes three cool-mist ultrasonic diffusers for different rooms, each arriving with three of our water-based Hotel Collection fragrances so you can scent from day one. Prices and headline specs below are live from the SOSA store. Whichever you choose, use only the SOSA water-based fragrance - raw essential or carrier oils can clog the misting plate.
| Diffuser / refill | Character | Best for | From |
|---|---|---|---|
| Boond (300ml mini) | USB · up to 6 hrs · colour night light · ~150 sq ft | Desk, bedside, hostel | ₹799 |
| Sukoon (500ml) | 16-18 hrs · 7-colour LED · remote + 2H/4H timers · 270-320 sq ft | Bedroom, study, nursery | ₹1799 |
| Megh (6L) | Up to 100 hrs · adjustable mist dial · ~35 dB · large-room humidifier | Living room, dry AC, winter | ₹3499 |
| Hotel Collection fragrance | Water-based refill · 7 hotel-inspired scents · 15/100/300ml | Refill for any SOSA diffuser | ₹299 |
Versailles
I trained as a perfumer at ISIPCA in Versailles, but half the questions we get are not about scent at all - they are about the machine. Indian rooms are bone-dry from AC and winter, and most gadget diffusers are too small, too loud, or quit by midnight. So we made three: Boond (300ml, desk), Sukoon (500ml, bedroom, with a remote and mood light) and Megh (6L, whole-room), each shipping with three of our fragrances.
They are cool-mist ultrasonic diffusers - an ultrasonic plate turns water into a fine, cool mist with no heating element, so there is no boiling water or burn risk, and each has an auto shut-off when the tank runs dry.
One thing I say on every listing and will say here: use only SOSA's water-based Hotel Collection fragrance. Raw essential oils, perfumes and carrier oils are thick or solvent-heavy and can clog the misting plate and damage the unit. A few drops of our water-based fragrance in the tank mists cleanly and scents the whole room.
Frequently asked questions
Facts verified June 2026: SOSA makes three cool-mist ultrasonic diffusers: Boond (300ml, USB, colour night light, up to 6 hrs, ~150 sq ft, ₹799), Sukoon (500ml, 7-colour LED, remote + 2H/4H timers, up to 16-18 hrs, 270-320 sq ft, BPA-free, ₹1799) and Megh (6L, adjustable mist dial, ~35 dB, up to 100 hrs, ₹3499). Each is cool mist (no heating element) with auto shut-off, ships with 3 water-based Hotel Collection fragrances (15ml ₹299 / 100ml ₹999 / 300ml ₹1799), and is made for Indian AC-dry and winter air. Use SOSA water-based fragrance only; raw essential or carrier oils can clog the ultrasonic misting plate. Composed in India; a portion of every order supports Nanhi Kali girl-child education. These are independent, hotel-inspired fragrance interpretations created by SOSA. SOSA is not affiliated with, endorsed by or associated with the hotels named; all hotel names are trademarks of their respective owners and are used only to describe the scent style.