Sunlight and gene: Genetics are the main force of causing aging. Sunlight, particualrly the uva, is the main force other than gene causing aged-look.
Answered 3/17/2014
6.4k views
Skin Changes: Skin changes are related to environmental factors, genetic makeup, nutrition, and other factors. The greatest single factor, though, is sun exposure. This can be seen by comparing areas of your body that have regular sun exposure with areas that are protected from sunlight.
Answered 11/2/2014
5k views
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