“Damage is the number one cause of dull hair,” adds Mark Townsend, a celebrity hairstylist in Los Angeles, California. “When strands get damaged, particularly from heat or harsh chemicals, they begin to break and won’t reflect light properly. The most important thing for shiny hair is that the hair cuticle is closed and smooth so it can reflect the light.” But don’t just lust after lustrous hair. We tapped a handful of hairstylists to share some hacks for closing those cuticles and bouncing the light to the next megawatt level, both immediately and over time. RELATED: The Benefits of a Hot Oil Treatment for Hair—and How to Do It Yourself
