The proper skin supports its ecosystems of microorganisms, including the fermentos and the bacteria, that cannot be removed by one any amount of cleanness. Estimates place the individual number of bacteria on the surface of a square shaped count (6,5 centimeters squared) of skin human being in 50 million euros, even so this value vary very in relation to the average of 20 squared feet (1,9 m2) of the skin human being. oily surfaces, as the face, can more than contain 500 million bacteria for square shaped count (6,5 cm ). Although these great amounts, all the bacteria found in the surface of the skin that if incase in a volume of the size of a pea. In general, the microorganisms keep one another one in the verification and are part of a healthful skin. When the counterbalance will be disturbed, can have one overgrowth and an infection, for example, when the antibiotics kill microbes, resulting in an extreme growth of I leaven it. The skin is continuous with the internal epithelial lining of the body in the orifices, each one supports its proper complement of microbes.

Adequate hygiene of the skin is important because the dirty skin favors the development of pathogenic organisms. The cells deceased that continuously get loose of the mixture of the epidermis with secretions of the sweat and glands sebaceous ea dust found in the skin, form a layer filthy in its surface. If washed moved away to the suspension from sweat and sebáceas secretions mixed with dirt and skin deceased it is not decomposed by the bacterial flora, producing an odor fetido. The functions of the skin are disturbed when she is excessively dirty, it becomes more easily damaged, the release of reductions of composites of the antibacterial one, and dirty skin is more inclined to develop infections. [Carece of sources]

The cosmetics must be used with care on the skin, therefore these can cause alergice reactions. Each time demands adjusted clothes to facilitate the evaporation of the sweat. The solar light, the water and air plays an important paper in keeping the healthful skin.