La Roche-Posay Effaclar Clay Face Mask for Oily Skin is a 2-in-1 purifying face mask and skin mattifier. This face mask is formulated with gentle clays, eliminates excess oil and invisible impurities (dust, pollution particles) and controls shine. The gentle clays in this face mask unblocks and purifies pores and controls excess shine. Pores appear more refined, skin feel smooth and looks radiant.