Let’s break it down: Between the frizz-inducing humidity, colour-zapping UV rays and drying salt water and chlorine, summer can take a real toll on your strands. “All those factors can make hair more prone to damage,” says Janet Jackson, hairstylist and L’Oréal Paris Hair Expert. That goes for all hair types, from curly to fine to colour-treated, as no one is safe from the harmful elements that are in high gear during our warmest months. Jackson—who’s worked with A-listers like Winnie Harlow, Iman and Andie MacDowell—knows a thing or two about getting your mane in order for the most socially packed season.