La Roche-Posay Effaclar Purifying Clay Mask is a dermatological clay mask for oily, spot or blackhead-prone skin. Clinically proven to unclog pores, control shine and cleanse deep impurities caused by pollution without over-drying. It absorbs sebum and impurities, preventing future blackheads. Contains Argilla & Kaolin to gently absorb sebum and mattify skin over time. Enriched with 5% Panthenol B5 to soothe and calm skin post-sebum extraction, reducing the risk of over-stimulating sebum glands. Cellubeads remove impurities with a magnet-like ability to absorb even the smallest and most invisible impurities, for an in-depth cleansing action. 9/10 dermatologists recommend La Roche-Posay Effaclar for oily, spot-prone skin.