Vitamin C Serum is one of the most tested natural treatments in the battle against aging. Dermatologists agree that it is a safe, natural alternative to chemical peels, laser treatments and even surgery. Clinical tests support that regular use of Vitamin C Serum promotes collagen synthesis in the dermis of the skin, which makes it an excellent choice for anyone who has wrinkles or age spots. Our skin is normally supported by collagen, but free radicals break it down. Vitamin C actually promotes collagen production. Studies show that it not only helps to stimulate more collagen, but it can also help to repair damaged collagen in the skin. Clinical studies showed measurable improvement with photo-damaged skin and wrinkles. Various studies indicate that 20% Vitamin C serum provides the highest level of absorption for the skin. Anything less or more cannot provide best results. However, many products on the market contain derivatives or L-Ascorbic Acid content above or below this level. Some of these derivatives are actually dangerous to use.