Deep wrinkles, lines, discolorations, rough texture, dryness, slackness - if you have not already guessed, we are describing the changes you may see as your skin ages.Why does skin change at all? As we mature, the cells that make up our bodies replace themselves more slowly. In skin's case, epidermal cells that once took 28 days to replace themselves may now take 30 or 32 days, leaving skin...