Short answer: to use sauna oil in a traditional sauna, mix a small amount of a scent made for saunas into your bucket of löyly water, stir, and ladle a little at a time onto the hot stones. Never pour or drip oil straight onto the stones or the heater. Infrared saunas have no stones, so scent them gently with a passive diffuser kept away from the heaters, and check your manual first. Scent is about enjoyment: it can make a session feel more relaxing, but it isn't a treatment.
What Is Sauna Oil?
"Sauna oil" usually means one of two things:
Sauna scents (sauna aromas or essences): products made to be mixed into sauna water. Brands such as Harvia tell you to mix the scent into your sauna water, which is then thrown on the stones. This is the easiest and safest choice for a traditional sauna.
Pure essential oils: concentrated plant extracts. They don't dissolve in water. They float on top, so a ladle can land a concentrated drop of oil on very hot stones. If you use them, use only a few drops and stir well right before each ladle.
Either way, the scent rides on the steam, called löyly in Finnish, that rises when water hits the hot stones.
The One Rule: Never Put Oil Directly on Hot Stones
Undiluted oil on hot stones or heater elements can smoke, smell burnt and, in the worst case, catch fire. It can also leave sticky residue on the stones. Always mix the scent into water first, and keep the bottle outside the hot room.
How to Use Sauna Oil in a Traditional Sauna
Fill the bucket with clean, cool water. Many sauna makers ask for water that is clean enough to drink.
Add the scent. For a sauna scent, follow the dose on the bottle, since brands differ. For pure essential oil, start with 2 to 3 drops in a full bucket.
Stir with the ladle just before you throw water.
Ladle a little at a time onto stones that are fully heated. Small ladles give a gentle burst of steam; a big splash can feel harsh and scalding.
Adjust next time. If the smell is strong enough to sting your eyes or throat, use less. A light scent is the goal.
Empty and dry the bucket after the session, and wipe the ladle.
If you are shopping for a stone-heater sauna, see our traditional saunas, and our guide on how to use a sauna covers the basics of a good session.
How to Add Scent to an Infrared Sauna
Infrared saunas warm you with heater panels, not stones, and they aren't built for water or steam. Infrared makers' manuals (Dynamic and Maxxus, for example) say to keep liquids and chemical cleaners away from the cabin interior. So:
Check your manual first, and follow it if it says not to use scents.
Use a passive diffuser such as a small stone or terracotta diffuser with a few drops of oil, placed on the bench well away from the heater panels, controls and the floor heater.
Never put oil on the heater panels, spray anything inside the cabin, or leave an open container of liquid where it could spill onto the floor heater or wiring.
Or scent the room instead: run a diffuser in the room outside the cabin, so the cabin itself stays clean and dry.
Steam Rooms and Steam Showers
Steam is already moist, so scent carries well. If your steam shower or generator has an aroma cup or essence dispenser, use it with the products its manual allows. Otherwise, a damp washcloth with a drop or two of oil, kept away from the steam outlet, works. Don't put oil into the steam generator unless the manual says you can. Browse steam showers if you're comparing models.
Popular Sauna Scents
| Scent | What it smells like | Good to know |
|---|---|---|
| Eucalyptus | Fresh, sharp, classic spa | Many people find it feels refreshing to breathe. Strong; use less |
| Peppermint | Cool and minty | Very strong. 1 drop is often enough. Can sting eyes |
| Pine, spruce or fir | Forest and resin | Suits the traditional Finnish feel |
| Birch | Green, leafy, summery | A traditional Finnish sauna scent |
| Lavender | Soft and floral | Popular for evening sessions |
| Citrus (orange, lemon, bergamot) | Bright and fresh | Citrus oils can make skin more sensitive to sun if they get on it |
Simple blends to try: eucalyptus with pine for a forest feel, or lavender with a drop of orange for a softer evening scent. Start with one or two drops in total and adjust.
What Scent Can and Can't Do
A pleasant smell can make a sauna session feel more relaxing and more like a ritual, and that is a fine reason to use it. The evidence for health effects is thin. The National Center for Complementary and Integrative Health notes that little rigorous research has been done on aromatherapy. In one study it describes, lemon scent lifted mood, but neither lemon nor lavender changed stress markers, immune markers or pain. So enjoy the scent, but don't count on it to treat congestion, pain, stress or anything else. For sinus trouble, see our honest guide to infrared sauna and sinusitis.
Who Should Skip Sauna Scents or Check First
People with asthma, allergies or scent sensitivity: strong fragrances can trigger symptoms in some people. Try a scent-free session, or a very light scent with the door ready to open.
Pregnant people and anyone with a medical condition: ask your doctor about both the sauna and the oils.
Homes with children and pets: Poison Control warns that many essential oils can be poisonous if swallowed and can cause rashes on skin. Store bottles locked away from children and pets, and keep pets out of a scented sauna.
Anyone with sensitive skin: don't put essential oils on your skin undiluted, and wash your hands after handling them.
As with any session, leave if you feel dizzy, nauseous or unwell. Our guide on how long to stay in a sauna covers safe session times.
Keeping Your Sauna Clean When You Use Scents
Empty, rinse and dry the bucket and ladle after each session so oily residue and mold don't build up.
Wipe benches with a damp cloth after use.
In infrared saunas, wipe with plain water only. Manuals warn that chemical cleaners can soak into the wood and come back out when the cabin heats up.
Rearrange or replace heater stones if they look coated or crumbly.
Our step-by-step guide on how to clean a sauna has the full routine for both types.
