Vitamin C inhibits skin-damaging free radical activity. It is also a requirement for collagen production, which declines as we age. Vitamin C plays a vital role in skin repair. If the skin is injured its Vitamin C content quickly scavenges free radicals and helps to remanufacture collagen to speed healing. The best way to get Vitamin C to the skin is through a topical application. Ideally, this would be done immediately after some type of exfoliating procedure such as DermaSweep. It can, however, also be done by applying a Vitamin C agent such as C-Quench (by Physicians Choice of Arizona) after cleansing the skin in the evening.