Start with dry hair. Tautly hold a spaghetti-thin section from around your face, says Lorri Goddard-Clark, a colorist at Los Angeles’s Privé Salon. Use a color brush to swipe the highlighting solution from the roots to the ends. Release, then dab a little more onto the ends. Repeat along your part (an odd number of streaks looks more natural). Rinse according to the instructions.