Glass hair is exactly that—shiny, soft lengths with that unmistakable mirror-like sheen. Aside from sitting in your colorist’s chair, what’s the secret to achieving glass hair? Summer, though, can be a foe of glass hair hopefuls—the combination of sun, salt, chlorine, and humidity all contribute to hair becoming drier and frizzier, a concoction for dull, lackluster lengths. Fortunately, it’s hair glosses to the rescue! These products designed to achieve a glass hair finish help counteract these effects because: