DO Try a Hair Primer Your hair can't get sunburned, but the sun can still damage your color and dry out your strands. Before styling—damp or dry—spritz on a primer like R+Co. One Prep Spray ($20, randco.com) and rake through hair. It helps hydrate and repair, in addition to adding softness and shine. The best part about these sprays? They work alone or with all your other hair products.