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

While red light tends to get all the attention when it comes to hair growth, blue light plays a valuable supporting role—especially if you’re dealing with scalp irritation, excess oil, or product buildup. This LED brush combines both wavelengths plus gentle sonic vibration, helping to stimulate the scalp while also calming it, thus creating a healthier environment for hair to grow.

“The blue-light technology on this one was really soothing,” says Glamour commerce writer Alanna Martine Kilkeary. “After a few uses, my scalp felt and looked pretty calm and irritant-free.” The thick, widely spaced prongs help the light reach the scalp more effectively, and the design makes it easy to move around your head. “I like that it’s lightweight and the prongs were thick, making it easy to get in between hairs and all parts of the scalp,” says Kilkeary. “My hair itself looks a little thicker at the root, and I can definitely see myself reaching for this again when I want a little extra oomph.”

Best Hair Band: Hairmax LaserBand 41 ComfortFlex Hair Growth Device

• What we love: Best laser hair-growth device; Hands-free use makes multitasking easy; quick treatment time
• What could improve: A bit bulky overall

This headband-style device uses 41 medical-grade lasers to target thinning areas at the root—without tying up your hands. Each treatment cycle lasts just 30 seconds per section, and a gentle vibration signals when it’s time to reposition. Built-in combs help part your hair, allowing the light to better reach your scalp.

“The Hairmax LaserBand is very comfortable to wear and incredibly easy to incorporate into a routine. I found myself wearing it while doing my makeup in the morning,” says Glamour tester Caitlin Wormser, noting it stayed firmly in place, even while she moved around. “Like all red-light therapy, patience and consistency are key, but I’m very excited to see how results shape up over time.”

Best Handheld: Foreo FAQ 301 LED Hair Strengthening Scalp Massager

• What we love: Compact and cordless; waterproof; quick treatment time
• What could improve: Using the included serum may make hair a bit greasy

Whether you’re noticing more hair in the shower drain or just want to treat your scalp to some extra TLC, this compact, waterproof device is a multitasking powerhouse. It combines red LED light therapy with Foreo’s signature T-Sonic pulsations to help boost circulation, clear buildup, and improve the absorption of scalp serums or hair oils. It’s completely cordless and rechargeable, and its ergonomic design makes it easy to use.

“I’d never tried a red-light tool on my scalp before, so I wasn’t sure what to expect,” says Glamour’s Kilkeary. “But I ended up really liking the experience. It has a powerful vibration that’s almost like a massage for your scalp. You can make it a little more or less intense as you please. The red light is super bright and feels warm upon contact,” she says, noting it was gentle enough not to irritate. “I haven’t noticed a huge difference yet, though my hair is a little bit thicker around my crown and I am seeing some new hair growth.”

Best Brush: Skin Gym LED Stimulating Hair Brush

• What we love: Equipped with both blue and red light; lightweight and compact; vibration adds a soothing element
• What could improve: Vibration feature is a bit loud and can’t be shut off

It’s shaped like a classic paddle brush, but instead of focusing on detangling, it delivers red and blue LED light directly to the scalp. The wide-tooth design helps part the hair so the light can actually reach your skin, while the firm plastic bristles offer a subtle massaging effect to further stimulate circulation.