Potent antioxidant that is shown to be able to protect skin from oxidative damages. Can improve appearance of aged skin by improving skin elasticity with enhanced collagen production, a protein that gives skin its elasticity. Mop up the free radicals that trigger wrinkling, sagging, & other aging changes. Vitamin C also helps smooth & firm skin & fades brown spots. The length of time from when you start using vitamin C until you see results varies with each person. While some people see changes as soon as 2-4 weeks, it may take others 6-8 weeks to see a difference.