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Wrinkles
We've all heard the clichés: Wrinkles
are a roadmap of your life. But many of us would rather not be
reminded of the distance we've traveled. What can you do? First,
understand what causes wrinkles.
Then, if you still want to reduce wrinkles, explore your treatment
options.
What Causes Wrinkles?
The following factors are the most
significant:
Aging
Wrinkles are a by-product of the aging process. With age, skin cells
divide more slowly, and the
inner layer, called the dermis, begins to thin. The network of elastin
(the protein which causes skin to
stretch) and collagen fibers (the major structural proteins in the
skin), which support the outer layer,
loosen and unravel, causing depressions on the surface. With aging, skin
also loses its elasticity, is less
able to retain moisture, oil-secreting glands are less efficient and the
skin is slower to heal. All of these
contribute to the development of wrinkles.
Facial Muscle Contractions
Lines between the eyebrows (frown lines) and lines jutting from the
corner of the eyes (crows feet)
are believed to develop because of small muscle contractions. Smiling,
frowning, squinting and other
habitual facial expressions cause these wrinkles to become more
prominent. Over time, the expressions
coupled with gravity contribute to the formation of jowls and drooping
eyelids.
Sun Damage
Exposure to ultraviolet radiation (too much sun) can result in premature
aging of skin. Premature aging
of the skin is called photoaging. The ultraviolet sunrays that cause
photoaging damage collagen fibers
and cause the excessive production of abnormal elastin. When ultraviolet
light damages skin tissue, an
enzyme called metalloproteinase is produced. This enzyme creates and
reforms collagen. During the
process, however, some healthy collagen fibers are damaged, resulting in
a disorganized formation of
fibers called solar scars. Wrinkles develop when the rebuilding process
occurs over and over.
Smoking
Healthy skin perpetually regenerates. While old collagen is broken down
and removed new collagen is
produced. Researchers have found that smoke causes a marked reduction in
the production of new
collagen. A lack of new collagen results in the development of
wrinkles...
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