Vichy Dercos Anti-Dandruff Shampoo Sensitive Scalps is a shampoo that soothes the scalp and removes dandruff. This formula has been created to meet the needs of sensitive scalps that also have dandruff crisis associated - thanks to bisabolol the scalp is soothed in order to reduce itching and redness and piroctone olamine helps to remove dandruff and prevent further crisis for up to six weeks. Results are noticeable from the first time you use.