Youthful skin enjoys an abundance of collagen—the natural substance that keeps our skin healthy and resilient. Unfortunately, the body’s natural aging process (along with exposure to environmental factors such as sun and pollution) produces free radicals—unstable oxygen molecules that can damage the skin’s sensitive cells. Over time, free radicals break down the collagen in our skin, causing these once resilient molecules to become rigid and brittle. As the deeper layers of collagen collapse, wrinkles form on the skin’s surface.