We’ve already taken notes on all the things celebs with perfect hair always do. But let’s be honest: They also happen to possess what most of us mere mortals don’t. Namely, a professional hairstylist. Since the possibility of having a hairstylist at our beck and call is close to zero, we thought we’d at least try for the next best thing: we asked Hollywood’s top hairstylists for the one product they can’t live without. From a classic thickening spray to a surprising grocery store buy, keep flipping for nine cult products you should add to your hair routine, stat!