Achieve the smooth, frizz free hair of your dreams with the Leave-In Keratin Hair Mask la professional grade treatment that works continuously throughout the day to repair, protect, and perfect. Infused with pure keratin proteins, it fills in damaged cuticles, eliminates frizz, and creates a sleek, glossy finish that lasts from morning to night. Simply apply and let the luxury of keratin do the rest effortlessly beautiful hair, all day long.