Discover vichy dercos anti dandruff water to foam shampoo 100% designed to treat dandruff, even stubborn on all curls coils while delivering 6 weeks anti dandruff relapse.. The formula, powered by piroctone olamine and salicylic acid, offers clinically proven efficacy on dandruff.. It also helps control the recurrence of dandruff symptoms such as scalp sensitivity 67%, itching and redness. It eliminates dandruff while caring for fibres with 66% shinier hair2 and 71% softer hair.. The formula was tested under dermatological control and is suitable for sensitive scalps and safe for colour hair2 . Its texture leaves a pleasant subtle fragrance onto the hair.. Clinical test conducted on 60 subjects with 2 applications per week, during 4 weeks.. Instrumental test.. Consumer test.