Our Vitamin C Serum is packed with nutrients to brighten the skin and prevent common signs of aging. To enhance the antioxidant benefits of Vitamin C, our serum includes Ferulic Acid to defend against damage, as well as Hyaluronic Acid and Sea Buckthorn Oil to support the skin's protective barrier. Our Vitamin C Serum 2-Pack Skin Kit, offers you double the age defense for radiant skin for up to 3 months.