2013年5月16日星期四
Knowledge about Skin (2)
How wrinkle come?
Wrinkle is the result of skin aging. Wrinkle is synthetically formed by internal cause, external cause and other factors.
Internal cause: in youth, skin is rich of moisture and all kinds of glands’ body fluid are excreted noticeably. Skin is at its best time at this time. Wrinkle is not easy to arise. However, wrinkle will come and temporarily exist if skin is of over hydropenia for reason that skin is not taken good care or diseases arise. If moisture is makeup to skin once, the temporary wrinkle will disappear. But in middle age, the horny layer’s ability of keeping moisture declines. Sebaceous gland is excreted less. Elastic fibers in corium are of denaturation and ruptured. Adipose layer decreases…. All these factors lead to skin’s change. Wrinkle is the symbol of skin aging, which can be seen with our naked eyes.
External cause: skin is the surface layer, which receipts sunshine, wind, and dryness. These are all factors making more and deep wrinkles. We all know that people living on Qinghai-Tibet Plateau all have deep wrinkles on their faces. This is brought about by wind and sunshine. Ultraviolet radiation in sunshine is one of the reasons for skin aging and wrinkles. Therefore, people should prevent skin from being sunburned. Sunburn prevention and moisture keeping are both important.
In addition, too much make-up is a direct harm to skin. All cosmetics are chemical. Although some cosmetics adopt natural materials, synthetics, such as coloring matters and flavors are also used in their production. Therefore, make-up provides beauty temporarily. It also damages skin and causes wrinkles.
What should attract our attention is that some wrinkles on women’s face are caused by cortex steroids ointment used in external way, such as fludrocortisone ointment, triamcinolone acetonide ointment, compound dexamerhasone acetate ointment. These ointments lead to skin shrinking, thinning and wrinkles.
Four-step wrinkle prevention
Wrinkle can be divided into kinetic energy wrinkle and static energy wrinkle. Static energy wrinkle is a kind of wrinkle that can be seen even a person has no facial motion, i.e. part under eyes, at altercates. That is brought from skin aging and from cuticle and corium becoming thin. Kinetic energy wrinkle is a kind of wrinkle that can be seen when a person’s face has a motion, i.e. wrinkles on glabella, sides of eye tail and forehead. But winkles can be also caused if a person’s bodily form is thin with less subcutaneous fat.
According to external changes in different ages, wrinkle’s formation can be divided into four stages: a. Mild aging stage: at the age of about 28-25. Fundamentally no wrinkle can be seen;
b. intermediate aging stage: at the age of about 35-40. Kinetic energy wrinkle arises;
c. relative serious aging stage: at the age of about 50-60. Static energy wrinkle arises;
d. most serious aging staging: at the age of over 60-75. Obvious wrinkles and skin prolapse can be seen.
Wrinkle arisen rate of all ages
Wrinkle arisen rate of all ages is recorded in percent form as follows:
At the age of 18-29: wrinkles arise on 44% of women’s forehead
At the age of 30-39: wrinkles arise on 56% of women’s glabellas
At the age of 40-49: wrinkles arise under the eyes of 72% of women and on glabellas of 75% of women
At the age of 50-59: 65% of women have goosefoot lines and 60% have nose-chin veins.
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