[EXCESS SEBUM]: pollution, stress, and poor diet contribute to excess sebum that can saturate the scalp. This excess sebum is then transferred to the hair from the roots to the tips, creating this oily effect. The dermopurifying shampoo Scalp Advanced will help alleviate this phenomenon. [ANTI-GREASE TREATMENT FOR HAIR]: the anti-grease dermopurifying shampoo Scalp Advanced by L'Oréal Professionnel has been formulated to absorb excess sebum on the scalp. This lightweight shampoo purifies the scalp from residues, sweat, and sebum for una a feeling of freshness and cleanliness. [FORMULA ENRICHED WITH DERMATOLOGICAL ACTIVES]: this silicone-free formula is enriched with 3% AHA, a water-soluble acid. This dermopurifying shampoo purifies the surface of the scalp, giving it a healthy and clean appearance. [DERMATOLOGICALLY TESTED SHAMPOO]: the formula of this shampoo for greasy hair has been developed by professionals and tested under dermatological control. This shampoo for greasy hair was developed in collaboration with 3 scalp experts: Vivek Shyam Bhatia from India, Takku Orii from Japan, and Jimmy Jiang from China. [PROFESSIONAL SHAMPOO FOR GREASY HAIR WITH SCIENTIFICALLY PROVEN EFFECTIVENESS]: after a single use, -78% sebum on the scalp*. [FRESH FRAGRANCE]: una composition wrapped in una refreshing breeze that offers una a feeling of purity. [PRO TIP]: for optimal results and increased volume, use the purifying clay Scalp Advanced 2 in 1 250 ml in addition to the dermopurifying shampoo.*Instrumental test on the removal of impurities after the application of the purifying shampoo.