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In zootomy and dermatology, skin is an organ of the integumentary system made up of multiple layers of epithelial tissues that guard underlying muscles and organs. As the interface with the surroundings, it plays the most important role in protecting against pathogens. Its other main functions are insulation and temperature regulation, sensation and vitamin D and B synthesis. Skin is considered one of the most important parts of the body. Many problems with a skin grow out stress. When you are nervous, sleep less, often forget to look after yourself, neglecting habitual cosmetic procedures, and drink not enough liquid which is necessary that the skin remained soft and smooth. The some people start to be scratched or touch the face more often. It increases probability of hit by it of pathogenic bacteria and serves as the reason of occurrence of "troubles".
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