Hair growth regrowing

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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.

Typically, humans have more hair on the top of the head (perhaps to protect against too much radiation from the head), where extremities meet the torso (axillary (arm-pit) hair and pubic hair), on the eyelids and above them (eyebrows). In most societies people shave, style or adorn their hair for aesthetic reasons.

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.

Herbal Care New Zealand
Organic products for weight loss, hair growth, and to stop smoking.
Norris Hair Transplant Clinic
About the Clinic, services and procedures and contact information. Includes information on hair growth type products. Located in Knoxville.
Unbalding: Hair Today, More Tomorrow?
by Susan L. Narod. Hair growth products overview, causes of hair loss, hair transplant surgery.
California Pacific Research, Inc.
New Generation hair care systems to promote healthy hair growth without drugs and potential side effects.
Hairz Online
Offering human hair and synthetic hair wigs, weaves, braids and hair growth products.

Hair growth regrowing