Roughly 65 million American men have some form of hair loss, but new trials show promising signs to reduce hair loss.

Men confronting a receding hairline traditionally have had few choices. Minoxidil and finasteride, the stalwarts of hair-loss treatment, arrived in the 1980s and 1990s. Since then, little has changed.

Whether you’re embracing new silver growths or attacking them strand by strand with tweezers, gray hair is an inevitable part of getting older. “Just as the skin ages and the rest of the organs in ...

The drugs have soared in popularity, with some men taking them for unapproved uses like anti-aging or increasing muscle mass.