1. High levels of an enzyme known as 5-alpha-reductase occur in cells of hair follicle.

2. This enzyme converts testosterone into DHT.

3. DHT causes miniaturization of robust terminal hairs.

4. This results in fine, soft vellus hairs that provide limited scalp coverage.

5. The growth phase gradually shortens until these hairs are lost permanently.

Propecia inhibits formation of DHT and over a period of several months reduces levels of DHT sufficiently to minimize its effects on hair follicle.

As with any drug, finasteride can cause side effects to a minority of users. The FDA trials reported a 2% incidence of varying side effects but these tended to lessen as body adjusted to drug over a period of months. Although Propecia or cheaper generic versions are easily obtained on internet it is strongly recommended that you seek advice of your doctor, at least in first instance.

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Flap technique - this procedure involves moving a flap of skin with its tissue, hair strands and follicles from side or back of head to front hairline by cutting it on three sides and stitching it to bald area.This can cause serious problems including excessive scarring, infection, disfigurement in forehead area and hair growing in wrong direction.

Scalp reduction - in this procedure bald area at crown is cut away and edges surrounding wound are pulled together and sewn at middle. This technique causes many problems including potentially hideous scarring, accelerated hair loss and infection.

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