How does hair loss treatment work?

Treatments work in a few different ways to help stop hair growth, preserve existing hair and may even regrow hair.

Minoxidil, a common topical treatment for male pattern baldness, is believed to work by assisting the blood flow to hair follicles on the scalp, which encourages hair to regrow. Other pill-based treatments work by inhibiting the conversion of testosterone into dihydrotestosterone (DHT), an androgen known to shrink hair follicles.