This advanced dermatological shampoo combines Microbiome Technology with Selenium DS and Salicylic Acid to eliminate up to 100% of visible flakes from the very first wash. Specifically developed to target excess sebum in normal to oily hair, it immediately calms itchy sensations and deeply purifies the scalp. Its clinically proven formula provides a powerful anti-relapse action that keeps dandruff away for up to 6 weeks.