L'oreal professionnel scalp advanced professional dermo-purifying shampoo is the perfect treatment for oily scalps. It is formulated with 3% aha, a water-soluble acid, which purifies the surface of the scalp and helps generate new cells. The gentle shampoo removes residue, sweat and oil from root to tip for a refreshed, clean feeling. Tested under dermatological control with experts in balayage and color, scalp and permanent services. With 78% less sebum after just 1 use*, this product offers scientifically proven effective results. A fresh fragrance that provides a feeling of complete cleanliness complemented by its highly purifying 2-in-1 scalp advanced clay mask as a pre-shampoo or mask for extra action. With l'oreal professionnel scalp advanced professional dermo-purifying shampoo you will get professional results without excess oiliness in your hair. *instrumental test Loreal Professionnel Professional Shampoos Scalp Advanced Anti-Grease.