One study published in the British Journal of Dermatology in 2015 assessed the effectiveness of minoxidil as a treatment for hair loss near the vertex scalp, or crown, as well as the frontal scalp ...

If your hair loss isn’t severe ... the men had an average hair count of 876 hairs per square inch of balding vertex scalp.

Unlike thickening shampoos, minoxidil goes deep into your scalp for long lasting ... to be effective at stopping hair loss along the hairline, crown, and vertex. Reviewers say it takes around ...