These shampoos claim to slow hair-shedding. We asked the experts how much they help — and where they fall short.

This article was reviewed by Knox Beasley, MD. If you’ve noticed the signs of male pattern baldness — say, a thinning hairline or a bald patch on the crown of your head — a hormone called DHT is ...

Dihydrotestosterone, or DHT, is an androgen hormone produced by testosterone. High levels of DHT can cause hair loss problems, including androgenetic alopecia, or AGA, and male pattern baldness, ...