Designed to slowly release hydrating and nourishing hair care ingredients while you wear (i.e. in-between washes), leave-in conditioners are the sidekicks you need in your hair care arsenal. But, like everything, it’s about finding the right formula for you. “There are so many different types of leave-in conditioners,” says award-winning hairstylist, Barney Martin. “Always go for one suited to your hair type. For example, nothing too oily for fine hair and a product with more oil for curly or damaged hair.”