It's DHT. Estrogen does prevent male pattern baldness and slightly reverses it, it's a known thing for trans women. If you don't think having your own pair of tits sounds rad as hell though you could just take finestride which is a dht blocker. Fair warning idk if dht does anything most men want, consult your doctor or at least search side effects if you're more the "buy hormone blockers off the internet" type