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Regarding exposure of the skin to be seen by others, or prevention of this, see nudity, nudism, modesty, clothing.

Fruits such as oranges also have a skin or peel, which is often removed (peeled) before eating.

In zootomy and dermatology, skin is an organ of the integumentary system; which is composed of a layer of tissuesBiological tissue is a group of cells that perform a similar function. The study of tissues is known as histology, or, in connection with disease, histopathology. The classical tools for studying the tissues are the wax block, the tissue stain, and the op that protect underlying muscleskeletal muscle Muscle is one of the four tissue types. The other three types are: epithelium, connective tissue and nervous tissue. The primary purpose of muscle tissue is to contract. Muscle contraction is used to move parts of the body, as well as to ms and organs. Skin is used for insulationThis page refers to thermal insulation. For electrical insulation see insulators, and for sound insulation see sound proofing. Often the same techniques used for thermal insulation can be used for sound insulation as well. Insulation is sometimes confused, vitamin DVitamin D is a fat soluble vitamin that contributes to the maintenance of normal levels of calcium and phosphorus in the bloodstream. Often known as calciferol . Forms of Vitamin D: Vitamin D lamisterol Vitamin D ergocalciferol (made from ergosterol) Vita production, sensationSenses are the physiological methods of perception. The senses and their operation, classification, and theory are overlapping topics studied by a variety of fields, but most notably neuroscience, cognitive psychology (or cognitive science), and philosoph, and excretionExcretion is the biological process by which an organism separates waste products from its body. The waste products are then usually expelled from the body by elimination''. In mammals, for example, the two major excretory processes are the formation of u (through sweat).

Skin on creatures regularly subjected to sunlightSunlight in the broad sense is the total spectrum of electromagnetic radiation given off by the Sun. On Earth, solar radiation is obvious as daylight when the Sun is above the horizon. This is usually during the hours known as day''. Near the poles in sum have pigmentation which absorbs the potentially dangerous radiation contained therein. Human skin pigmentation varies across populations in a visually dramatic manner. This has sometimes led to the classification of people(s) on the basis of skin color. See the article on human skin color for more information.

Damaged skin will try to heal by forming scar tissue, often giving rise to discoloration and depigmentation of the skin.

The skin is often known as "the largest organ in the human body": this does not only (obviously) apply with regard to surface area, but also with regard to weight, as it weighs more than any single internal organ.

The skin on a person's face is seen by people that person interacts with. For some people, then, facial skin care is of importance, and cosmetics are made to deal with the appearance of the person's face and condition of the skin, such as pore control and blackhead cleansing.