Cells for New life
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Anti-Ageing Therapy

Cosmetology

The first lifecycle phase is called Anagen, a growing period that about 85 percent of the hairs on a person’s head are in at any given time. During anagen, which can last two to six years for one hair, the hair grows at the rate of about five inches a year. After anagen, the hair enters Catagen, a transitional 1 to 2 week-long stage when the hair follicle and root both shrink.

The hair then enters the last stage, Telogen. This is a resting phase that lasts about five to six weeks, during which time the old hair does not grow. At the end of telogen the hair follicle re-enters anagen, the growth phase, and often a new hair will push the old one out, starting the growth cycle over again.

Within a hair follicle, there are stem cells that reside in an area called the hair follicle “bulge,” which is a small compartment located where the outer root sheath meets the arrector pili muscle (see Hair Follicle figure). The stem cells in the bulge are multi-potent epithelial stem cells, and can become or differentiate into all the epithelial cell types in the follicle (including hair follicles, epidermis, and sebaceous glands) .They are intimately involved in the hair follicle lifecycle.