Saturday, October 2, 2010

What Causes Skin Cell Loss & Skin Color?

Here we look at what causes skin cell loss and how that relates to the skin's color or tone. Then let's look at: How to Rejuvenate Skin and Skin Color. Age spots, wrinkles and sagging are all related on a deep level.
The cellular rejuvenation process is an amazing one. The skin's cells are constantly replaced throughout a person's life, assuming he or she is in good health.
The cells are produced by stem or mother cells in the deepest of the skin's layers. Damage to the mother cells plays a role in scarring.
The skin's elasticity and firmness is a result of thick layers of keratinized cells and the elastic fibers composed of collagen and elastin. The fibers are located beneath the mother cells. They too are replaced on a regular basis.
The mother cells release perfect copies of themselves, which gradually make their way to the surface. If the cell is infused with the pigment melanin, the cell will be darker in color.
The cells naturally slough off on a regular basis. In fact, they make up a major proportion of house dust. That's how many are lost during a day. If the cells were not sloughed off, the skin's tone and color would start to appear dull, rough and darkened.
This whole process slows down with age. As a result we start to see skin shrinkage, reduced firmness and an unevenness of skin color. Wrinkles and other things we typically think of as the visible signs of aging start to appear.
Melanin - What it is
Melanin production is primarily responsible for the color of one's complexion. Darker-skinned individuals have a higher concentration of melanin, although even a dark complexion will become darker due to sun exposure.
A darkening of skin tone is basically due to a process called photo-aging. UV rays stimulate melanin production and increase the activity of free radical molecules. Free radical damage is a major cause of cellular aging.
Skin Tone
Skin tone becomes uneven when melanin starts to clump. The clumping may occur for no reason, due to hormonal activity or because of damage to the mother cells' DNA strands. When DNA is damaged, the cells can no longer produce perfect copies. They start to mutate and become deformed.
Skin Color
Uneven skin color can also be caused by exposure to toxins like cigarette smoke. Some toxins are only activated when exposed to UV light. The ingredients in tanning accelerators are examples.
The skin's thickness varies throughout the body, but the thinnest portion is located beneath the eyes. The dark circles you might see beneath your eyes are not due to melanin. They occur as a result of blood and waste products leaking from the blood vessels. The fluids become more visible with age, because the skin's thickness is reduced.
Age Factor
Age is the one thing we cannot do anything about. Everyone would like to live to be a ripe old age, but no one wants to experience skin shrinkage.
Now that you understand more about the rejuvenation process, you are probably interested in what you can do to prevent or reverse skin cell loss and lighten or even out the skin's color. You'll learn about those things in my next article: How to Rejuvenate Skin and Skin Color.
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