AMETHYSTE Purify Peeling Mask Pre-shampoo peeling. This unique formula is an exclusive combination of highly effective purifying agents and special micro-beads to help exfoliate the scalp and remove flakes, excess oil and product residue. Directions: apply an adequate amount of product directly on the scalp. Massage gently for about 5 minutes, lathering with water if necessary. Rinse and wash with the shampoo. Ideal to prepare the hair and scalp before any Amethyste treatments. 150ml