There are two types of aging. One can be prevented and the other tempered. Intrinsic aging is the result of the naturally decreased release of collagen in adults, which makes skin delicate and thin. Extrinsic aging is the result of environmental damage like pollution and shows in freckles, roughness and deep wrinkles. The more you take care of your skin and the earlier you start, the less extrinsic aging you will experience and the less the intrinsic aging process will affect you.
Source: @scientificamerican