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According to Susan C. Taylor, board-certified dermatologist and author of Rx for Brown Skin, there are four basic mechanisms of skin aging: 1.) genetic factors; 2.) telomere shortening and chromosomal alterations; 3.) free radical generation (in excess of free radicals necessary for normal metabolism); 4.) UV light-induced skin damage. Each of these are discussed in more detail below. Genetic factors that contribute to skin aging Skin aging is the result of genetic, as well as environmental, factors. In several lower species, genes that... read more