Does a man become resistant to finasteride over time?

I am a 23 year old man who recently received a scalp miniaturization test at a hair loss clinic. I was told the hairs on the top of my head are about 85% the density they should be. If I’ve learned anything from tressless, it’s that prevention is key. My only fear about starting FIN or DUT is that my body will build up a tolerance to them. I want to take these drugs my entire life...

Source