GUARANTEED AUTHENTIC: Obtained directly from manufacturer at a dermatology conference. Unopened box, new and unused. Benefits of C-RADICAL Defense Formulated with a proprietary encapsulated novel form of Vitamin C (Sodium Ascorbate), which helps to defend against free radical damage while supporting the skin's ability to conserve elastin*. Proven to help reduce the effects of free radicals in the skin by up to 74%*. Helps brighten skin and reduce the appearance of fine lines, wrinkles, photodamage, and other signs of aging. Works to help refine skin texture and reduce the appearance of redness and brown spots. 15 proven antioxidants to help neutralize free radicals, protect against UV damage and other environmental stressors such as blue light and pollution. Known to support the skin’s ability to stimulate collagen production, the main protein that provides support to the skin's structure and helps prevent sagging or wrinkling. Ideal for most skin types. Winner of New Beauty 2024 "Best Vitamin C Serum" See why C-RADICAL Defense is a game changer for skin.