Finasteride really works. It's worth its weight in gold. And I don't understand people that say then won't take it because they think they will eventually lose the fight. You don't stop brushing your teeth when you get a cavity even though you washed and flossed religiously. You want to have your teeth and hair for as long as possible. In the end we die anyway, nothing is forever.
That's true, but toothpaste isn't ingested and doesn't change your body chemistry.