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The face is seldom visibly haired on the forehead and cheekbones. The skin of the eyebrows is thick, coarse, and hairy that on the eyelids is thin, smooth, and covered with almost invisible hairs. An example is the dissimilarity between the palms and the backs of the hands and fingers. Human skin, more than that of any other mammal, exhibits striking topographic differences. As a person ages, anatomical and physiological alterations, as well as exposure to sunlight and wind, leave skin, particularly that not protected by clothing, dry, wrinkled, and flaccid. Hair growth, sweating, and sebaceous secretion begin to blossom. General skin pigmentation increases, localized pigmented foci appear mysteriously, and acne lesions often develop. At adolescence hair becomes longer, thicker, and more pigmented, particularly in the scalp, axillae, pubic eminence, and the male face. Children younger than two years sweat poorly and irregularly their sebaceous glands function minimally.

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In infants and children it is velvety, dry, soft, and largely free of wrinkles and blemishes. The characteristic features of skin change from the time of birth to old age. Contunico © ZDF Enterprises GmbH, Mainz See all videos for this article

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The skin deep questions how to#

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