La Roche-Posay Kerium DS Shampoo is an oily-dandruff treatment that helps to exfoliate the scalp, reduce itching and reduce the dandruff crisis. The formula contains LHA in order to have a micro-exfoliating action that will help to remove dead cells and avoid flaking. The anti-itching action of Vitamin PP helps to improve the quality of life and and the Root Targeting technology deposits a purifying complex on the scalp that helps to fight the origin of dandruff and prevent future crisis.