Hair growth formular

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On most adult humans there are two main types of hair: terminal hair, and vellus hair. A third type, lanugo hair, is present in the fetus, and some newborn babies.

The cuticle is responsible for much of the mechanical strength of the hair fibre. It consists of scale-shaped layers. Human hair typically has 6-8 layers of cuticle. Wool has only one, and other animal hair may have many more layers. Hair responds to its environment, and to its mechanical and chemical history. For example, hair which is wetted, styled and then dried, acquires a temporary 'set', which can hold it in style. This style is lost when the hair gets wet again. For more permanent styling, chemical treatments (perms) break and re-form the disulphide links within the hair structure.

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.

Hair Growth Rate
Why is the hair on your arms short, but the hair on your head long?
California Pacific Research, Inc.
New Generation hair care systems to promote healthy hair growth without drugs and potential side effects.
Unbalding: Hair Today, More Tomorrow?
by Susan L. Narod. Hair growth products overview, causes of hair loss, hair transplant surgery.
Norris Hair Transplant Clinic
About the Clinic, services and procedures and contact information. Includes information on hair growth type products. Located in Knoxville.
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.

Hair growth formular