Last week, I was getting a blowout when my hairstylist reached for a secret product from her station: a tube of Kérastase Thermique. She kept it hidden, she told me, because it wasn’t the salon’s ...

All products featured on Glamour are independently selected by Glamour editors. However, when you buy something through our retail links, Condé Nast may earn an affiliate commission. Last week, I was ...