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, ...

Then I evaluated 92 different shampoos, tested 43 with the help of my colleagues, and sent 15 final contenders to 21 panel testers in their teens, 20s, 30s, 40s, and 50s with a range of hair lengths, ...

And while I’ve written stories about the best shampoos for those different hair types — from fine to color-treated and even ...