Ideal for oily hair types, the L’Oral Professionnel Seri Expert Scalp Advanced Anti-Oiliness Dermo-Purifier Shampoo helps to clarify the scalp and strands for a fresher finish. n Infused with a 3% water-soluble AHA (Alpha-Hydroxy Acid), the shampoo gently buffs away dead skin cells on the scalps surface, effectively removing build-up and daily debris. The innovative formula helps to diminish the look and feel of excess oils, leaving the hair touchably soft.