As people age, their skin naturally loses it's elasticity and is affected by gravity. The combination of these two things, in addition to other factors such as overexposure to the sun, leads to wrinkling. Some of the more common wrinkles people develop are smile lines and crow's feet.
Stress can also be a major factor to aging skin.
Then they have a death in the family, divorce or other stress. They experience it for a few months and that can age someone years. Experts say that the best way to avoid wrinkles, is to begin taking care of your skin before they appear. Women in their 30's who may see fine lines, should use a product containing alpha hydroxy. Older women with deeper lines may need a product containing retinol, which peels away dead skin cells.