If you've been struggling with sleep, you've probably tried the usual advice: no screens before bed, blackout curtains, maybe even melatonin supplements. But there's growing interest in a less obvious approach - using red light therapy to support better rest.
At first, this might seem counterintuitive. Isn't light supposed to keep you awake? The answer depends entirely on which wavelengths you're exposed to, and when.
Why Light Matters for Sleep
Your body runs on a 24-hour internal clock called the circadian rhythm. This system regulates when you feel alert and when you feel drowsy, largely based on light exposure.
Blue light (like screens and overhead LEDs) suppresses melatonin production. Your body interprets blue-heavy light as daytime, which is why scrolling on your phone at midnight makes it harder to fall asleep.
Red and near-infrared light doesn't trigger the same response. These longer wavelengths don't suppress melatonin the way blue light does - and some research suggests they may actually support the body's natural wind-down process.
What Does the Research Say?
A 2012 study published in the Journal of Athletic Training examined female basketball players who received red light therapy (630nm) for 14 days. The treatment group showed improved sleep quality scores and increased melatonin levels compared to the control group.
Research in the journal Sleep Medicine Reviews has examined how different light wavelengths affect circadian rhythms, confirming that red and amber wavelengths have minimal impact on melatonin suppression compared to blue and green light.
A 2019 study in Photomedicine and Laser Surgery found that red light therapy improved sleep quality in participants with insomnia, with effects lasting beyond the treatment period.
How Red Light Therapy May Support Sleep
1. No Melatonin Suppression - Unlike blue light from screens, red wavelengths don't interfere with your body's natural melatonin production.
2. Relaxation Response - Many users report that sessions feel calming, helping trigger the parasympathetic nervous system.
3. Cellular Energy and Recovery - Red light supports cellular repair processes that happen during sleep.
4. Reduced Inflammation - Chronic inflammation has been linked to sleep disturbances.
How to Use Red Light Therapy for Better Sleep
Timing: Use your device - such as the Spectrum Pro Mask for a facial session - 1-2 hours before bed as part of a wind-down routine.
Consistency: Like most aspects of sleep hygiene, benefits come from regular use over several weeks.
Duration: 10-15 minutes per session is typical.
Combine with good sleep hygiene: Reduce blue light after sunset, keep your bedroom cool and dark, maintain consistent sleep times.
The Bottom Line
Red light therapy shows promise as a tool for supporting sleep quality, primarily because it doesn't disrupt melatonin production the way blue light does, and may offer additional benefits through reduced inflammation and improved cellular function.
Worth trying? If you're already investing in better sleep habits, red light therapy could be a useful addition. Just don't expect it to work miracles on its own.
Related: Best Time of Day for Red Light Therapy
The Total Recovery Mat provides full-body coverage that may complement an evening recovery routine.
Leave a comment
This site is protected by hCaptcha and the hCaptcha Privacy Policy and Terms of Service apply.