Collagen is a protein in the skin. Elastin is another protein in the skin. Both help to give the skin structure. As we get older, aging and environmental factors reduce the body's ability to form collagen and elastin. This results in wrinkles. Aging also makes the skin thinner and drier, which also increases the development of wrinkles. Exposure to ultraviolet light, UVA or UVB, from the sun accelerates the aging process.
