6 Best Red-Light Therapy Devices for Hair Growth That Really Work

Here at Glamour, we’ve been diligently testing red-light therapy devices for almost two years, focusing not just on face masks for skin care benefits but also on gadgets specifically designed to promote hair growth. We’re always on the lookout for the latest and greatest, and during this time, our editors have tried more than a dozen red-light therapy devices for hair growth, including helmets, hats, and brushes.

We evaluate each one for comfort, ease of use, and effectiveness, paying special attention to practical details, like session length, portability, fit, and how well the device integrates into a busy daily routine, as well as the science behind the technology. This hands-on approach allows us to provide honest, real-world feedback so you can make an informed decision before investing in a device—often a few hundred dollars or more.