Minoxidil is effective for promoting hair growth in different areas, but its effectiveness varies depending on the region—scalp, beard, or eyebrows—due to differences in hair follicle characteristics and hair growth patterns. 1. Scalp (Androgenetic Alopecia): Effectiveness: Minoxidil is most commonly used for scalp hair loss, particularly in cases of androgenetic alopecia(male and female pattern baldness). It works best on the …