Dermalogica Biolumin Brightening Vitamin C Serum With AHA works with skins own defenses to brighten and firm. enhances skins natural defense system to brighten, firm and help dramatically reduce the appearance of fine lines and wrinkles. Advanced bio-technology and an ultra-stable Vitamin C complex work synergistically to enhance bioavailability of Vitamin C to fight oxidative stress and the appearance of skin aging before it starts. Optimized delivery system combined with a peptide and AHA renews for brighter, firmer, more radiant skin. Advanced bio-technology fuses ultra-stable Vitamin C and Palmitoyl Tripeptide-5, helping to dramatically reduce the appearance of fine lines and wrinkles. Formulated with advanced technology to deliver more Vitamin C into the skin. This superior formula outperforms other Vitamin C products (including those formulated at higher concentrations). Other key ingredients include Vitamin C Complex for brighter, firmer, more radiant skin, Lactic Acid to accelerate cell turnover, Sophora Japonica Flower Extract to help return skin to a calm state after experiencing oxidative stress, and Salvia Hispanica (Chia Seed) Oil to hydrate and help quench free radicals.