BODY
Is cooling body wash
only for summer?
Short answer: no. Longer answer: the cooling one you've been using wasn't cooling you in the first place.
- Menthol doesn't lower your temperature. It switches on the cold receptor, and your body answers by warming up.
- Measured: skin 0.4°C warmer, core 1.3°C warmer.
- Real cooling is physical — sugar alcohols pulling heat out of the skin as they dissolve.
- Ours has no menthol in it. Nothing to rebound from.
- Which makes the season the wrong question.
- It was never about July. It was about the day you'd had.
Nobody asks whether a hot shower is only for winter.
You have one in August, after a day that went badly, because heat is not a season — it's a thing you want when you want it. Cold works the same way. We've just been sold it on a calendar.
We already do this everywhere else
Ice cream in February. An ice bath in December, twenty minutes after the gym, because the cold is the point and the weather isn't. Cold water on your face at 11pm after a phone call you didn't want.
Nobody warms up the ice bath because it's cold outside. You use cold when your body is running hot, and your body runs hot for reasons that have nothing to do with the forecast — a packed carriage, a room with no windows, an argument, four flights of stairs with shopping.
The city does that in January too. It just does it indoors.
Your menthol wash is warming you up
Here's the part nobody in the aisle tells you.
Menthol doesn't lower your temperature. It binds to a receptor called TRPM8 — the one your nerves use to detect actual cold — and switches it on. Your brain gets a cold signal. No cold arrives.
So your body does the sensible thing. It defends you against a cold that isn't there: it fires up heat production and warms you.
Core temperature went up by 1.3°C in the same study. The tingle is real. The cooling is a message, and the message is wrong.
Which is why the cold fades in ninety seconds and you're somehow warmer than when you got in.
What actually takes heat away
Heat has to go somewhere. That's not marketing, it's the first thing you learn about energy.
Some things absorb heat as they dissolve. Sugar alcohols — erythritol, xylitol — do it strongly enough to measure: 15 grams of erythritol in 50ml of water drops the water by 8°C. Not a sensation of 8°C. Eight degrees.
Put that on wet skin and the same thing happens. The heat doesn't get signalled away. It leaves.
| What you're comparing | Menthol | Sugar alcohols |
|---|---|---|
| The mechanism | Switches on the cold receptor | Absorbs heat as it dissolves |
| What your body does next | Warms up to defend against cold that isn't there | Nothing. There's no threat to answer |
| Measured effect on skin | 0.4°C warmer | Heat physically leaves |
| Does the cold last? | Fades in about ninety seconds | Lasts while it's dissolving |
Ours has no menthol in it. Not a reduced amount — none. So there's nothing to rebound from, and nothing that stings if you've shaved, or if the day already went badly for your skin.
Thyme leads the scent, which is where thyme has earned its keep for about two thousand years. It doesn't have to do the cooling. The physics handles that.
So when would you actually reach for it?
Not in July. On the days.
- The commute that turned into a sauna between two stops
- Twenty minutes after a workout, when you're still radiating
- A flat with heating you don't control
- Sunburn, which does not check the month
- A night where your body clearly hasn't agreed to sleep yet
- Any day where you got home and the first thing you did was stand still
If none of that happened, use the calming one. That's why there are three.
The questions we get
Does cooling body wash work in winter?
Yes. Cooling works on your body temperature, not the air temperature — and indoor heating, gyms and packed transport raise body temperature all winter.
Is menthol bad for you?
No. It's simply not doing what the label implies. Menthol activates the cold receptor rather than removing heat, and the body's response to that signal is to warm slightly.
What cools skin without menthol?
Compounds that absorb heat as they dissolve. Sugar alcohols such as erythritol and xylitol have a strongly negative heat of solution, so dissolving them draws heat away from the surface.
Will it sting on shaved or sunburnt skin?
It shouldn't. The sting people associate with cooling products comes from menthol and alcohol. There's no menthol in this one.
How long does one pouch last?
About thirty showers, at roughly 10ml a wash. One size, 350ml, whichever formula you pick.
the Cooling wash
No menthol. Thyme, and the physics that actually moves heat.
Cold isn't a season. It's an answer to a specific kind of day — and those happen in every month there is.
note: One email when the next guide lands. Nothing else, ever.
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