targets visible dandruff flakes from the first washDercos Anti-Dandruff Shampoo for Greasy Hair, is our first patented formula enriched with Selenium DS and Cohesyl, and helps to purify and soothe the scalp. The formula targets visible dandruff flakes from the first wash, to reduce their appearance. The scalp feels cleansed and purified, and instantly hair feels lighter and easier to style.