Highlighting your hair looks great, but can weaken your hair causing brittleness and breakage. Breakage can lead to your hair looking dry and frizzy. The best way to combat dryness, brittleness and breakage is to use a conditioning treatment after bleaching or highlighting, and then weekly thereafter. This plumps your hair with moisture, making it more elastic and less likely to snap. The correct conditioning treatments also add shine, manageability and bounce.