Cleanses oily residues from your hair and restores skin weakened by excess sebum. What it does: This mask is applied to the scalp before washing. What else you need to know: It absorbs excess oils and gets the hair and scalp ready for the remaining steps of the Biokera range of treatments for oily hair. Argan oil natural glycerin and keratin give hair body and a glossy hydrated appearance.Apply to unwasheddry hair. Use a comb to make separations of 1cm. Take care to apply the product directly on the scalp and use a finger to distribute the product evenly. Leave on to work for between 15 and 20 minutes (we recommend the use of additional heat). Rinse. Then wash the hair with specific oily hair shampoo.