Achieve the smooth, frizz-free hair of your dreams with the Leave-In Keratin Hair Mask — a 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.