Advanced Scalp Anti-Oil Dermo-Purifying Shampoo by L'Oréal Professionnel Paris. | The overproduction of sebum can saturate the scalp, making it oily. This excess oil is transferred to the hair from roots to ends. The advanced professional dermo-purifying scalp shampoo contains a formula specifically for oily scalps. This gentle shampoo purifies the scalp and fiber from residues, sweat, and oil for a fresher and cleaner feeling. Concentrated with 3% water-soluble AHA acid. Helps purify the surface of the scalp so that new cells can be generated. After a single use, the scalp is left with 78% less sebum. Developed with hair professionals and tested under dermatological control. A fresh formula with a refreshing fragrance that provides a clean sensation and a base for care. Silicone-free.