New hair product stimulates growth dermatologist
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Hair serves a number of different functions. It provides insulation from cold weather and, in some species, from particularly hot weather. Because hair is often pigmented, it provides coloration. This might serve to camouflage an individual; in some mammals, the pigmentation changes with the seasons, becoming white during the snowy winter, for example.
Structurally, hair consists of an inner cortex, comprising spindle-shaped cells, and an outer sheath, called the cuticle. Within each cortical cell are many fibrils, running parallel to the fibre axis, and between the fibrils is a softer material called the matrix. It grows from a hair follicle.
Hair is a biological polymer; over 90% of its dry weight is made up of proteins called keratins. Under normal conditions, human hair contains around 10% water, which modifies its mechanical properties considerably. Hair proteins are held together by disulfide bonds, from the amino acid cysteine. These links are very robust; for example, virtually intact hair has been recovered from ancient Egyptian tombs. Different parts of the hair have different cysteine levels, leading to harder or softer material.
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- MoreHair.com
Comprehensive, up-to-date information about hair growth, hair loss, and various treatment options. Factual articles on the follicle, the growth cycle, and genetics. - Vaniqa
Features, eflornithine hydrochloride, a prescription cream that slows the growth of woman's unwanted facial hair. - Herbal Care New Zealand
Organic products for weight loss, hair growth, and to stop smoking. - Renu Herbs
Specializing in detoxification and colon cleansing, natural weight loss, hair growth, and other formulas for better health. - Physicians Hair Growth
Hair loss treatment center that supplies ReMox, a combination of minoxidil and tretinoin.