Chilling out on the beach in the summer sun can make healthy hair dry and brittle, especially if it’s chemically treated. New York City stylist Derrick Scurry says, “Coating your hair [before you go out in the sun] with a moisturizing treatment is your best defense against blazing rays.” Beach beauties should apply Infusium 23 Heat Activated/UV Protection Leave-In Treatment with special UV filters to provide more protection than regular rinse-out conditioners. Shield hair even further from harmful rays with, Rene Furterer Sun Mousse.