Does finasteride grown hair stay your lifetime?

Over time (sometimes years or decades), the finasteride MAY become less effective. Everyone is different. It is clear, however, that you must stay on the finasteride if you want to keep your hair as finasteride is a lifetime commitment. Many of my patients in their 60s stayed on finasteride and the few that stopped it, told me that they lost huge volumes of hair within a couple of months so they went back on it. This suggests that the finasteride is working well into a man’s 60s.