Briogeo Don't Despair, Repair! leave-in mask is hair's new best friend. This strength and moisture treatment mends brittle, damaged hair with each use. Rather than using silicones, the formula closes structural gaps and creates a protective layer. Vitamins, minerals, and essential fatty acids work to nourish hair, prevent damage, and control frizz. The leave-in mask ultimately leaves hair stronger, smoother, and hydrated.