Kérastase is a heat protectant serum to repair damage and smooth hair. This leave-in treatment for blonde hair contains Hyaluronic Acid and Edelweiss Flowers Extract to hydrate and strengthen hair. The opalescent milky serum instantly unifies damaged areas of blonde hair, whether you’re a cool-toned blonde or a honey blonde, or just have highlights. 

It also has texturizing and smoothing effects, and offers heat protection from styling tools up to 230°C, and protection against other external aggressions. Hair is 32x stronger, with -56% less surface damage*.