Red light therapy is now widely available both in clinics and at home—but the differences matter. Medical-grade devices used by professionals deliver higher power and deeper penetration, often ...

Image in Creative Commons. In 1967, Hungarian scientist Endre Mester tried to cure skin cancer in mice using a low-powered ruby laser. He failed to stop ...

Sweeney is a contributor for TIME. Sweeney is a contributor for TIME. If you’re always on the lookout for the latest skincare gadget, you may have already tried facial rollers, sculpting wands, and ...