See, I'm cooler than you!
"These results suggest that all kinds of hair protected the scalp from the sun in hot, humid conditions. Curls might further reduce heating by creating a layer of air between the surface and the scalp, the researchers speculate." https://www.smithsonianmag.com/smart-news/curly-hair-keeps-the-head-coolest-but-any-hair-is-better-than-none-180982424/
It sure as hell doesn't feel like it it helps 😂
The results are kinda surprising, especially since most curly hair is also dense and thick.
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@ExecutiveFunction404 I was surprised too. I have long, frizzy hair, and in an Arizona summer, it's like wearing a blanket.