L'Oréal Scalp Advanced Anti-Oiliness Dermo Purifier Shampoo targets the needs of oily scalps. It reliably eliminates excess sebum, sweat, oil, dirt and product build-up. This purifying shampoo by L'Oréal is enriched with 3% AHA, a water-soluble acid that gently exfoliates the scalp to promote cell renewal.