Even if you’re not an A-list celebrity parading her way through awards season or a model criss-crossing the globe for Fashion Week, your hair has likely been put through the wringer.“If you’re blow-drying and coloring your hair regularly, even just for grays, you’re automatically more prone to dryness and split ends,” explains Kristy Dicus, a colorist at the Frédéric Fekkai salon in Los Angeles. No need to hit the panic button. Regaining good hair health doesn’t have to mean taking a yearlong sabbatical from hot tools, ditching the color or lopping it all off.QUIZ: How Healthy is Your Hair?Savvy product manufacturers are upgrading their formulas—from at-home dyes to shampoo—to help repair existing damage and prevent more from occurring. Read on to learn which made the YouBeauty cut (no pun intended).