Vichy Dercos Anti-Dandruff DS Shampoo for Dry Hair is a shampoo that prevents and treats dandruff crisis on dry scalps.Suitable for dandruff which falls to your shoulders.The scalp cells' bond is strengthened in order to avoid desquamation and Selenium removes all dandruff.Results are seen from the first day and crisis are prevented for up to six weeks - itchiness and dandruff are drastically reduced.