OKAY PROFESSIONNEL KERATIN SMOOTH Repairing Effective Hair Care Mask 500ML How to Use? OKAY PROFESSIONNEL KERATIN SMOOTH Repairing Effective Hair Care Mask is applied with a sufficient amount to the lengths and ends of your wet hair after shampooing. Rinse after waiting for 5 minutes. What does it do? OKAY PROFESSIONNEL KERATIN SMOOTH Repairing Effective Hair Care Mask's superior repairing and moisturizing content fights against dryness to keep your hair soft, shiny, tangle-free and easy to manage. Specially developed for damaged and dry hair. Provides ease of wet and dry combing. Provides anti-frizz effect. Does not weigh down dry hair. Gives silky softness and shine. Helps preserve the moisture of the hair. Gives perfect softness to the hair. Thanks to the keratin in its content, it repairs the hair and gives it a healthy look.