Short answer: put your sauna hat on dry before you enter the hot room, wear it for the whole hot session, take it off for the cold plunge or cool-down, and let it dry fully before the next use. That is the entire method, and a few small habits make it work even better.
Key takeaways
- Put the hat on dry, before you step into the hot room, never after your head has already overheated.
- Wear it for the entire hot session. There is no reason to take it on and off mid-round.
- Take it off for the cold plunge, cold shower, or contrast round so it stays dry and ready.
- Dry it fully and reshape it between uses. That single habit keeps it fresh and long-lasting.
- If you sauna daily, rotate two hats so each one gets a full day to dry.
Here is the full routine.
Quick reference: do this, not that
| Step | Do | Don't |
|---|---|---|
| Before the hot room | Put the hat on dry | Soak it first or wet it down |
| During the hot round | Wear it the entire time | Take it on and off mid-session |
| Cold plunge or cool-down | Take the hat off | Wear it into cold water |
| Between sessions | Reshape it and hang it somewhere airy | Stuff it damp into a bag |
| Daily sauna use | Rotate two hats | Force one wet hat to dry overnight |
1. Put it on dry, before you go in
A dry wool hat gives you the best insulation, because dry wool holds the most trapped air. If you are still deciding whether to bother, our guide to why you should wear a sauna hat covers the reasoning in full. Put it on before you step into the hot room rather than waiting until your head is already overheating. Starting with a dry hat from the beginning is the single biggest thing you can do to get the full benefit.
Do not soak it first. A wet hat insulates worse and defeats the purpose.
2. Wear it for the full session
The benefit of a sauna hat is consistency. Keep it on for your entire time in the heat so your head stays buffered the whole way through, not just at the start. There is no reason to take it on and off mid-session. If you are curious about the mechanism, see whether sauna hats actually work and the benefits of a sauna hat.
If you are doing multiple rounds in the hot room, the hat goes back on dry for each hot round.
3. Take it off for the cold plunge or cool-down
The hat is for the hot room only. When you move to a cold plunge, cold shower, or contrast round, set it aside. You want to keep it out of cold water so it stays dry and ready for your next hot round. Getting it soaked in the plunge is the most common way people end up with a wet, underperforming hat.
4. Let it dry fully between sessions
After your session, gently reshape the hat while it is still warm and hang it somewhere airy. Drying it properly is the single biggest thing you can do to keep it fresh and make it last. A sealed gym bag or a damp corner is where odor and mildew start, so give it real airflow instead. When it does need a proper clean, follow our guide to washing a wool sauna hat so you do not damage the fibers.
If you sauna daily, rotating two hats solves the drying-time problem, since each one gets a full day to dry.
Common mistakes to avoid
- Soaking it before use. Dry insulates best. Always start dry.
- Wearing it into the cold plunge. Take it off first to keep it dry.
- Storing it damp. Always dry it fully and store it somewhere ventilated.
- Waiting until your head overheats to put it on. Wear it from the start.
What about size and fit?
A sauna hat should sit comfortably over the top of your head and ears without squeezing. If it covers your ears, even better, since ears are one of the first things to feel uncomfortable in high heat. A hat that holds its shape will keep fitting and performing session after session.
Can you wear one in any sauna?
A wool sauna hat works in a traditional dry Finnish sauna, which is where it shines, and it is also useful in hotter infrared sessions. In a wet steam room the air is cooler but very humid, so the benefit is smaller and the hat will pick up more moisture. The hat is at its best in genuinely hot, dry heat. Material matters here too: our breakdown of wool versus felt versus synthetic sauna hats explains why a natural fiber handles heat and moisture best.
The Felty take
Felty makes the sauna hat, perfected. Our Original Wool Sauna Hat is 100% premium wool, handcrafted in small batches and built for exactly this routine: put it on dry, wear it through the heat, and let it air out. Treat it simply and one hat will be part of your ritual for years. If you are ready to use one properly, shop our wool sauna hats and start with the routine above.
Frequently asked questions
How do you use a sauna hat?
Put the hat on dry before you step into the hot room, then wear it for your entire hot session. Take it off for the cold plunge or cool-down so it stays dry, and put it back on dry for each new hot round. After your session, reshape it and let it air out fully before the next use.
Do you wear a sauna hat wet or dry?
Always dry. Dry wool traps the most air, which is exactly what gives you the insulating buffer. A wet hat insulates worse and defeats the purpose, so resist the urge to soak it first.
Do you keep the sauna hat on the whole time?
Yes, keep it on for the full hot session rather than taking it on and off. Consistent coverage is what keeps your head buffered from start to finish. If you do multiple rounds, the hat goes back on dry for each hot round.
Should you wear a sauna hat in the cold plunge?
No. The hat is for the hot room only, so set it aside before you get into a cold plunge or cold shower. Keeping it out of cold water means it stays dry and ready for your next hot round.
When should you put on a sauna hat?
Put it on before you enter the hot room, not after your head has already overheated. Starting dry from the beginning is the single biggest thing you can do to get the full benefit. The hat is doing its job from your very first minute in the heat.