Healthy skin appearance. Skin is the outermost tissue of the body with an area of approximately 16, 000 cm2 for an adult and represents about 8% of the body weight. It has a very complex structure that consists of many components. Cells, fibers and other components make up several different layers that give skin a multi-layered structure. Veins, capillaries and nerves form vast networks inside this structure. In addition, hairs stick out from the inside of skin. Numerous fine hair furrows are scattered over the surface of skin.
Except for a few specific localized areas, human skin normally ranges from pH 4.2–6.0 due to the abundance of fatty acids that are present. Skin should be slightly acidic - women with an alkaline stratum corneum (the skin's outermost layer) develop more fine lines and crow's-feet—and are more prone to sun damage—than those with acidic skin. On the other hand, excess fat could attract microbes causing acne.
Except for a few specific localized areas, human skin normally ranges from pH 4.2–6.0 due to the abundance of fatty acids that are present. Skin should be slightly acidic - women with an alkaline stratum corneum (the skin's outermost layer) develop more fine lines and crow's-feet—and are more prone to sun damage—than those with acidic skin. On the other hand, excess fat could attract microbes causing acne.
