Vitamin CVitamin C fights wrinkles by promoting healthy collagen. Its antioxidant properties repair damage caused by the sun and the aging process while helping prevent future damage.
A vitamin C product needs to be both active and stable. Since l-ascorbic acid is the only form of vitamin C that can be absorbed by the skin, it is active. However, l-ascorbic acid is hard to stabilize in a homecare product. A stable formula is easy to spot. The product should be light-colored at first but should darken after being exposed to the air. This gradual oxidation is essential to the potency of l-ascorbic acid and will not significantly affect the efficacy of the product when used as directed.