I’m 35, can I stop taking finasteride?

If most hair loss occurs by 35 and then pretty much stabilises does that mean we can stop taking fin after 35?

Hair loss is progressive. If you are stable on finasteride, stop it, and you might find instant hair loss to a pattern that you should have had if you didn’t take finasteride.  I call this “Catch-up Hair Loss,” which means that you lose all of the benefits plus what you fixed by going on the drug. Catch-up Hair Loss always occurs in men on long-term finasteride.  This is a warning for you: don’t do something that you might regret, as so many people I have taken care of told me when they decided to stop taking finasteride.