Vitamin-C IDS High Potency Serum 20 uses only L-Ascorbic Acid (vitamin C) to create a more youthful complexion. Vitamin C works by neutralizing the free radicals that cause visible signs of aging. Potent antioxidants fight already existing free radicals while preventing new free radicals from forming. Vitamin C also encourages collagen production for increased vitality, strength and youthfulness. Vitamin C works in a timely manner by depositing itself into the areas between the cells where its actions are most effective. Vitamin-C IDS High Potency Serum 20 promotes healing, youthfulness and strength within the skin for a complexion that glows with absolute radiance.