Are essential oils in the sauna safe for everyone? People experience scent differently. In a saunagus, the gusmester pours water with essential oil onto hot stones and moves the scented air with a towel. The scent might feel inviting, or it may be too much for you. Both responses matter.
The oils we choose for a gus
Our rule is simple: we use 100% pure essential oils from Heat Harmony's own collection. The gusmester chooses and administers them. We are using our remaining Urtegaarden oils as we move toward organic oils from Frank Oils, alongside the blends from RESET. The exact scents can change from one session to another.
A bottle marked duftolie or fragrance oil is not a substitute. We do not use fragrance oils in our sauna, even when the label names a familiar plant. A perfume scent and a pure essential oil are different kinds of product. Bringing your own bottle also changes the air for everyone else. Our behaviour policy allows only products provided and administered by a certified gusmester.
Pure does not mean mild for every person. It tells you about the oil, not how your nose, throat or skin will respond. Organic does not settle that question either. We choose what goes into the room carefully, while leaving space for each guest to say when a scent does not feel right.
The pleasure of changing the room
There is plenty to love in the oils themselves. In a poll of 31 team members, bergamot and cedar were joint favourites. Bergamot brings a bright citrus note; cedar gives a woody contrast. A gusmester might let one open a round and another settle a later one.
Eucalyptus can feel brisk against the heat. RESET's GUIDANCE blend features rosemary, pomelo and nutmeg, suggesting another turn from herbal to citrus and warm spice. These are scents to notice, not treatments to breathe in deeply. Our guide to sauna oils explores more of the palette, and our piece on eucalyptus in the sauna explains why a fresh feeling in the nose does not prove clearer airways.
The towel, music and pace change how a scent reaches you. A note that seems quiet at the door can feel closer across the benches. The same scent may be lovely to one guest and uncomfortable to the person beside them.
If scent feels too strong
If you know you are allergic to eucalyptus or another oil, please come and speak to the gusmester when you arrive, before the round starts. Ask which oils are planned and ask the gusmester to leave out the one you react to. We’re glad to talk it through before you enter, so you know what is planned for the round. If you have asthma, another respiratory condition or a history of strong reactions, ask your healthcare professional about attending a scented, hot session.
Some people get headaches, irritation or breathing symptoms around fragrances, as the American Lung Association explains. France's ANSES has also reported irritation and breathing symptoms from essential-oil sprays and diffusers used at home. A home diffuser is not a sauna, so those reports cannot tell us how likely a reaction is during a gus. They do give us a reason to listen when someone says a scent is too much. Scent irritation alone does not prove an allergy; Poison Control notes that essential oils can also cause allergic reactions.
You can move to a lower, cooler bench or step out at any time. If you feel dizzy or unwell, leave and tell staff immediately. If you have trouble breathing, get urgent medical help. Do not stay to finish a round or force a deep breath for the sake of the scent. If you already feel unwell before the session, our house policy asks you to stay out.
Questions before you book
Can I ask the gusmester to leave out an oil?
Yes. Tell the gusmester before the round which oil you need to avoid and ask what is planned. You can discuss the session before deciding to enter.
Can I bring an oil I know I tolerate?
No. Personal oils, scrubs, honey and similar products are prohibited. The gusmester uses Heat Harmony's approved products, so everyone shares the same planned air.
Can I choose a gentler gus?
Relaxed Gus has gentle music and soothing scents. That describes the mood, but it cannot predict your response to an individual oil. Ask about planned scents before booking. The FAQ covers other practical questions.
What if a scent bothers me during the session?
Leave the sauna and tell staff. You do not need to explain yourself before stepping out. If breathing becomes difficult, seek urgent medical help.
If you feel ready for a gus, browse available sessions and current prices. Bring a large towel, make room for the warmth, and take each round at your own pace.