One of the primary causes of BPH is from androgens, specifically the conversion of testosterone -> dihydrotestoerone via the 5-ar enzyme.
The prostate is an androgen-sensitive tissue, and DHT causes enlargement.
It's not guaranteed to fix it, but it's one option.
A cure should be a one-off measure after which one stays cured. If not forever then at least for years.
Something that needs to be repeated, esp. daily, should have a different word. That’s not a cure.