The main cause of hair thinning is lack of blood circulation, oxygen supply and nutrition in the head or scalp area. The scalp have miniature hair follicles and large amount of DHT which is the reason for hair loss. After consuming Generic Proscar, the active component Finasteride brings down DHT concentrations. Finasteride inhibits or blocks the enzyme Type II 5 alpha-reductase that converts the hormone testosterone into DHT. Increasing levels of testosterone reduces the hair thinning and men regain hair. Genetically predisposed individuals can also use this medicine to improve hair condition.