Vichy Pharmacy DERCOS Sebo-Correcteur Shampooing Traitant. A shampoo treatment for hair that suffers from oily scalps. With assets that prevent the appearance of sebum and leave hair clean, free and with movement. In addition, by releasing the bulb from the hair root, it acquires a natural and beautiful volume. Its hypoallergenic formula is dermatologically tested. Free of sulfates and silicones.