The outermost layer of skin function is to protect the skin resistance against the outside world, to prevent fluid loss and keep moist. But the environment humidity, temperature, and improper cleaning would undermine the basic functions of the stratum corneum. The stratum corneum skin unhealthy, condensate water will worsen, even to add a lot of water or be lost. When the cuticle damaged Keratinocyte itself can produce a series of inflammatory reactions. Of course, the outside world a variety of allergens and chemicals more easily penetrate the skin, which produce allergic skin reaction or inflammation.
Skin stratum corneum lipid content or moisture content will be affected by age, sex, nutritional status and seasonal and other factors. Age of the stratum corneum lipid generation reduced, and the lipid content in winter than in summer significantly reduced.
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