Sulfur, Salicylic Acid as well as Zinc Sulfate in a clay base that efficiently provides a deep cleanse to the pores removing excess oil and blackheads. Zinc Sulfate lowers swelling as well as succeeding scarring. Sulfur Clay Mask is an integral component of Vivant Skin Care acne treatments. MADE in THE U.S.A. Vivant Skin Care Labs utilize U.S. Pharmaceutical Grade basic materials, the highest possible grade for skin care products. All Vivant Skin Care products are developed to work synergistically to make your skin look its ideal.