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Does Red Light Therapy Work?

September 10, 2025

Red light therapy masks promise glowing skin, fewer breakouts and even smoother wrinkles. Sounds amazing, right?

But does it really work, or is it just hype?

We asked Andrew Wong, MD, a primary care provider with Hartford HealthCare Medical Group, to share the truth about red light therapy — and whether it’s worth the investment.

What exactly does red light therapy do?

Red light therapy (RLT) masks use red and near-infrared light (typically 600–850 nm) to energize skin cells from the inside out.

“This stimulates cellular energy production in a process called photobiomodulation,” says Dr. Wong. “It basically boosts the skin’s metabolism.”

That energy boost can lead to:

• Fewer fine lines and wrinkles (by increasing collagen production).
• Brighter, more even skin (by improving circulation and calming inflammation).
• Faster healing for acne and other skin irritations.

> Related: Do Pimple Patches Actually Work? 

It might even help your hair.

Yes – really.

“Red light therapy has also been shown to stimulate hair follicles, increase scalp circulation and support fuller growth in people with pattern baldness,” says Dr. Wong.

But is there proof it works?

There’s some evidence – with a catch.

“Several studies support the benefits of RLT, especially for skin,” says Dr. Wong. “But most of that research involves professional-grade equipment – not what you’re ordering online.”

At-home masks are much weaker. They can still help, but don’t expect dramatic results.

How to make it work for you.

If you’re going to try red light therapy, consistency is key.

“RLT is safe for all skin tones, although lighter skin may see faster results,” says Dr. Wong.

Here’s how to get the most out of your mask:

• Choose an FDA-cleared device with wavelengths between 600–850 nm.
• Use it 3–5 times per week for 10–20 minutes.
• Look for higher-quality devices – cheaper ones may not have the power or LED count to be effective.

Is red light therapy safe?

Yes – when it’s used correctly.

“It doesn’t emit UV light, so it won’t increase skin cancer risk,” says Dr. Wong. “Still, wear eye protection and talk to your doctor if you have a skin condition or use light-sensitive medications.”

And a heads-up: RLT isn’t a cure-all. “It won’t replace medical treatment for conditions like cystic acne or psoriasis,” adds Dr. Wong.

> Related: 3 Ways Your Primary Care Provider Keeps You Healthy 

Bottom line – is it worth buying?

If you’re hoping for overnight magic, this might not be it.

“But if you’re consistent, RLT masks can help reduce wrinkles, brighten skin, treat mild acne and support healing,” says Dr. Wong.

They’re not as powerful as in-office devices – but they’re safe, affordable and easy to use at home.

“Give it a go if you’re curious,” says Dr. Wong. “Stick with your skincare routine, keep expectations realistic – and see if you like the results.”