Causes of Wrinkles
Posted: Thu Aug 05, 2010 10:41 am
There are many factors that contribute to the development of wrinkles.
Free radicals are molecules that lead to the degeneration of collagen, a protein found in the skin that keeps it elastic and healthy-looking. Free radicals are found in the UV radiation in sunlight, smoking and air pollution.
Changes in hormones also produce changes in the skin. Menopause and decreased estrogen production can affect the skin's elasticity and also cause fine lines.
Muscle use, including everyday expressions like frowning and smiling, also leads to wrinkles while the effects of gravity loosen the skin, causing it to sag.
How Wrinkles Form
As we age, the cells in the epidermis (the outer layer of the skin that protects us from the elements) become increasingly thin and decreasingly sticky. As a result, our aging skin becomes thinner and drier; cells divide more slowly, meaning that the natural repairing mechanisms in the skin work less quickly. Changes also occur in the dermis, the second layer of the skin, where the connective tissue is found. The connective tissue controls the strength and elasticity of the skin, as well as the proteins found in it. In our aging skin, the dermis becomes thinner and collagen production is decreased. Elastin fibers decline, leading to decreased elasticity.
Free radicals are molecules that lead to the degeneration of collagen, a protein found in the skin that keeps it elastic and healthy-looking. Free radicals are found in the UV radiation in sunlight, smoking and air pollution.
Changes in hormones also produce changes in the skin. Menopause and decreased estrogen production can affect the skin's elasticity and also cause fine lines.
Muscle use, including everyday expressions like frowning and smiling, also leads to wrinkles while the effects of gravity loosen the skin, causing it to sag.
How Wrinkles Form
As we age, the cells in the epidermis (the outer layer of the skin that protects us from the elements) become increasingly thin and decreasingly sticky. As a result, our aging skin becomes thinner and drier; cells divide more slowly, meaning that the natural repairing mechanisms in the skin work less quickly. Changes also occur in the dermis, the second layer of the skin, where the connective tissue is found. The connective tissue controls the strength and elasticity of the skin, as well as the proteins found in it. In our aging skin, the dermis becomes thinner and collagen production is decreased. Elastin fibers decline, leading to decreased elasticity.