If Propecia Can’t Stop Progressive Hair Loss, How Can it Regrow Hair?

If Propecia eventually can’t stop the natural hair loss progression, then how does that explain it growing hair again in people who take it?

Every drug has limitations. Propecia (finasteride 1mg) has its greatest effect in the first two years, but it’s important to note that it still works even after those first two years by slowing the hair loss. The drug may reverse hair loss in younger men, particularly if the loss occurred within the past couple of years.