One of the world's rarest oils, argan oil is derived from the Moroccan argan tree. Its moisturizing properties help revive and nourish dry and damaged hair.; One 'n Only Argan Oil Hydrating Mask is a rich, creamy treatment designed to hydrate and repair damaged hair. One 'n Only Argan Oil Hydrating Mask does not need to be heat activated; 5 to 10 minutes will treat hair with needed moisture and protein, adding elasticity and shine. This highly effective mask revitalizes and hydrates hair, restoring shine and managability. Directions: After shampooing with One 'n Only Argan Oil Moisture Repair Shampoo, apply a generous amount of One 'n Only Hydtaing Mask all over the hair and comb it through. Let it penetrate for 5 to 10 minutes, rinse out and follow with any One 'n Only Argan Oil styling products.