I can usually tell which of my clients sauna before they tell me.
It's in the top layer. The part closest to the ceiling.
If a friend's post brought you here, she already figured out the hard part on her own. The heat. The top bench. The hair sitting in the hottest air in the room.
She was right.
What she probably didn't know is the question my clients ask me next, every single time: which hat?
That one took me eleven weeks to answer.
If you just want to see the hat that passed, see it here »
The Hair You Worked For
Most of my clients didn't get their hair by accident.
They grew it out for years. They pay for color every eight or ten weeks. They use heat protectant before every blow-dry and sleep on silk.
Some of them sit in my chair with hair that's the healthiest it's ever been.
Some are careful with every hot tool they own.
Some are paying for color that won't last. I see it at the shampoo bowl: the top already dull and brassy weeks before their next appointment, while the hair underneath still looks like the day they left my chair. They blame their water. Their shampoo. Sometimes me.
And some have started finding short, snapped pieces on their bathroom counter and don't know why.
Different hair. Same habit. They all sauna.
And every one of them has something real invested in that hair. Years of growing it. Hundreds of dollars of color. Or just a lot of care.
Here's what I tell all of them:
You don't wait for a leak to fix a roof. And you don't wait for breakage to protect hair you spent years growing.
Why Damage Matters More Than You Think
This is the part most people don't know.
Hair can't heal.
It isn't living tissue. Once a strand is damaged, nothing repairs it. Masks and oils make it feel softer for a few days. They don't undo anything.
The only real fix I have is scissors.
A three-inch corrective cut is about six months of growth, gone in twenty minutes. I've done that cut on hundreds of women.
I've also done it on myself.
A few years ago my own top layer went dry and crackly under my salon lights. I was doing everything right. I didn't know what I was missing until I was holding my own shears after close.
That's why I care so much about the word before.
Protection matters most before you can see anything.
But if you can already see it, I don't want you reading this and thinking you're too late. Most of the women in my chair already have some of it.
So here's what I tell them.
A lot of what's bothering you right now isn't from two years ago. It's from last Saturday.
The crunch on top when you rinse after a session. The new short pieces on the counter. The brass that shows up before your next appointment. That's your top layer taking a fresh hit, twice a week, every week.
The damage that's already there, I'll take care of with my scissors. The damage you'd do next Saturday is the part you get to stop.
And when you stop it, those are the first things to change. Not in six months. Within a few sessions.
The question is what actually stops it.
What My Client Cards Showed
When I pulled my client cards, the pattern was hard to ignore. Of my 23 clients who sauna, 19 showed it first in the top layer. Drier, rougher and fading faster than the hair underneath.
The reason surprised me. Your skin can cool itself. It sweats. Your hair can't. It just sits there and takes the heat.
Most of those clients protected their hair from a ten-minute blow-dry more carefully than from a twenty-minute sauna.
So did I.
And everything we sell to fix it goes on afterward. Every mask, oil and bond treatment on my shelf. None of it is on your head while it's happening.
The only thing that works during the session is something between your hair and the heat. That's why people who grew up with the sauna wear felt.
Think about a winter coat. A thin one and a thick one can be made of the exact same wool, but only one of them keeps you warm. The thick one holds more air, and trapped air slows heat down.
Felt works the same way. The denser it is, the more trapped air sits between your hair and the hottest air in the room.
Which means the hat matters more than the idea of a hat.
Several of my clients had already tried one. Their top layer looked exactly the same. Still dry on top. Color still fading early.
When I looked at what they were wearing, I saw why:
- A towel soaks through with sweat, gets heavy and slides off within minutes.
- A wet bun leaves hair at its weakest, sitting in steam.
- A swim cap traps heat right against the strands.
- Thin felt heats through within minutes. There isn't enough air in it.
- Wool and synthetic blends hold heat against the hair.
- Shallow hats sit on top like a lid, leaving the crown and longer lengths in the hottest air.
A hat that heats through, slides off or leaves your crown out isn't protecting anything. It's just a hat.
That's when I started testing.
