Which room, which scent? Clean tea scents for bedrooms, warm amber for evenings and entryways, bright citrus-pepper for entertaining spaces.
Why not raw oils? Neat essential and carrier oils are too thick for an ultrasonic plate and can clog it. SOSA's water-based fragrance is made to mist.
How to use it in the tank
The method is almost too simple. Fill the diffuser tank with filtered or RO water to its line, add a few drops of your chosen SOSA water-based fragrance, replace the lid and switch it on. The ultrasonic plate turns the whole thing into a fine, cool mist that carries the scent up and out across the room. Start with a few drops and adjust to taste - more for a large or airy room, less for a small one.
The reason we insist on water-based fragrance is not sales - it is physics. An ultrasonic plate atomises water. Thick raw oils float and pool on it instead of misting, and over time that coating dulls or damages the plate. Our fragrance is built to go where the water goes.
A word on what not to do. Do not pour neat perfume, undiluted essential oil, or a carrier oil like almond or jojoba into the tank. Do not dab our diffuser fragrance on your wrists - it is a room fragrance, not a skin perfume. And do not use hot water; these are cool-mist units.
Which scent for which room
Seven scents, each our own interpretation of the style a famous hotel is known for. They are inspired interpretations, not the hotels' actual proprietary scents, and SOSA is not affiliated with the hotels named. Here is how I place them room by room.
| Room | Scent | Feel |
|---|---|---|
| Bedroom | White Tea Serenity (Westin-inspired) | Spa-clean, calming - white tea, aloe, cedar |
| Living room | Quiet Luxury (Ritz-Carlton-inspired) | Soft, expensive - white tea, bergamot, cedar |
| Entryway | Warm Welcome (Four Seasons-inspired) | Gracious - citrus, floral, sandalwood |
| Study | Forest Suite (1 Hotels-inspired) | Grounding - cedarwood, vetiver, green leaves |
| Evening / entertaining | Lobby Bar (W Hotels-inspired) | Bold - citrus, pepper, amber |
There is no rule you must follow, only a logic that tends to please. Clean tea scents feel right where you rest - bedrooms and quiet rooms. Warm, ambered scents suit evenings and the moment guests step in. Bright, peppery-citrus scents lift a room where people gather and talk.
Myth: "One strong scent for the whole house is best." A single scent everywhere flattens; a home feels considered when the bedroom is calm, the entry is warm, and the living room is soft. Build a small wardrobe of two or three.
Start with the three fragrances that ship with your diffuser, notice which rooms they suit, and size up to a 100ml or 300ml bottle of the ones you reach for most.
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.