So I'm soon 20yo and I think it's likely that I'll lose my hair when I'm older. I think in that case I would just let it go or use propecia. Propecia has a problem tho, because I live in Finland (I might move abroad later) and I read that in here they don't sell propecia to 42yo or older, so in that case using propecia would mean that I'd lose a lot of my hair at once, after I stopped taking it, rather than over time. It would be more dramatic. I don't know why I'm thinking this, but I guess I like to plan things ahead.