Skin Functions

Among the skin's main physiological roles the chemical barrier function is central to the use of topical drugs because deposition of a topical drug into the deeper, living strata of skin is a prerequisite for achieving its pharmacological effect. An outline of the functions follows. Degeneration in some of the functions can be pathognomonic of disease. Even where specific functions do not relate materially to the skin's state of health, they are tied in with cosmetic practices and thereby are of interest to pharmacists.

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