Understanding the hair growth cycle will help you appreciate the long term nature of any non-surgical approach to managing hair loss. WebMD has a good description of the hair growth cycle:
Hair on the scalp grows about .3 to .4 mm/day or about 6 inches per year. Unlike other mammals, human hair growth and shedding is random and not seasonal or cyclical. At any given time, a random number of hairs will be in one of three stages of growth and shedding: anagen, catagen, and telogen.
Age well my friends!