Can I stop a mature male hairline from developing with the drug finasteride

I really do not know if finasteride can stop the maturing of a hair line in men. I have never had the opportunity to use it for this purpose, but I would expect that a maturing hair line will evolve even if you are on this drug. The reason I believe this, is that maturing hairlines usually reflect a process called apoptosis (cell death) which is, in men, tied to the number of hair cycles that the hair goes through. It is probably triggered by testosterine and maybe DHT. If a hair cycle is 3 years in length and let’s say that apoptosis is scheduled for 7 cycles, that person will lose the hair at the sage of 21. If you are committed to try this, I, as a doctor, would agree to prescribe this drug for you if you were my patient.