7 Tricks to Make Your Hair Look Thicker

“Peroxide doubles the thickness of each strand,” says colorist Michael Canale of Canale Salon in Beverly Hills. “It swells the hair shaft, which makes your hair look and feel fuller.” Another reason you might want to highlight: When your hair color has dimension (a mix of shades), it creates the illusion of density. Also, keep in mind that your hair color should match the color of your scalp as closely as possible if you want to camouflage a wide part.