Could you please explain why propecia does not stop hair loss a lot more quickly? I thought it lowers the dht levels straight away so surely this should stop the hair loss.
Reversing the balding process takes time as the drug works slowly on the hair generating mechanism. Even if it fully worked in a day (ridiculous as this sounds), the hair grows from the scalp at a rate of 1/2 inch per month, so to see benefit for hair that is 2 inches long, you would have to wait at least 4 months.
Assuming that each month adds strength to the follicular generating system, and the delays in the time for the hair to grow out 2 inches, I would not be surprised to see the reports that it takes between 1 year to maybe even 2 years to see the full benefit of the process. This is, of course, what we see.