Skin Care Anti-Aging Vitamin C Retinol Niacinamide Tea Tree Oil Not Tested on Animals Our Age-Defying & Skin Clearing Serum is a comprehensive solution that addresses lines, wrinkles and blemishes on the skin. This lightweight serum contains Retinol and Lipo Hydroxy Acid to increase cell turnover and clear clogged pores, while Hyaluronic Acid, Vitamin C and Niacinamide defend the skin and visibly reduce the appearance of uneven tone and texture.