Product Overview Formulated for an oily scalp, Kérastase's new purifying shampoo with micro-beads helps to reduce the appearance of dandruff without over-moisturising & is recommended by our in salon experts. Benefits Reduce the appearance of dandruff from the first application, & delay its reappearance for up for 6 weeks* (*clinically tested on 31 people.) This formula is inspired by skin care & is lightly moisturising. Key Technology Zinc Pyrithione, micro-beads & Salycilic Acid work in this unique formula to help exfoliate the scalp, & leave it feeling smooth & cleansed.