In addition to promoting a radiant youthful appearance, this kit is recommended to help clear and purify oily or acne-prone skin. SkinCeuticals Skin System III Clarify Contains: Serum 10: Formulated with 10% L-ascorbic acid, this antioxidant treatment helps protect against damaging UVA/UVB rays, prevent premature signs of aging, and stimulate collagen production. Phyto Corrective Gel: Optimal for sensitive or problematic skin, this light oil-free gel contains botanical extracts with anti-inflammatory and antiseptic properties to help soothe and calm irritated skin. Ultimate UV Defense SPF 30: This true broad-spectrum sunblock contains 7% transparent zinc oxide to help protect against the damaging effects of UVA and UVB rays. Bonus: Clarifying Clay Masque: This non-drying masque combines kaolin and bentonite, the highest quality natural earth clays, to decongest pores and lift impurities. Botanicals and minerals are added to help heal and calm the skin, while a 5% hydroxy acid blend gently exfoliates. Skin System Bag. Purchase this Skin System and save $23 compared with purchasing the individual items separately