LED Face Masks Explained: Red, Blue and Near Infrared Wavelengths
Quick answer: An LED face mask uses small light sources set at specific wavelengths, measured in nanometers. Red sits around 630 to 660nm, near infrared around 850nm and blue around 415nm. Comparing masks comes down to wavelengths offered, number of LED chips, session timer, fit and warranty.
Masks are the easiest light device to use hands free, and the spec sheet is where they differ. This guide explains the terms so you can read any mask listing with confidence.
What the colors mean
Wavelength is the distance between peaks of a light wave. Different wavelengths are different colors, and some, like near infrared, cannot be seen at all. A mask lists the wavelengths its LEDs emit so you can see what the device is built to do.
| Wavelength | Color | Where it appears on a spec sheet |
|---|---|---|
| 415nm | Blue | Blue mode |
| 630 to 660nm | Red | Red mode |
| 850nm | Near infrared (invisible) | Combined with red in one mode |
For a deeper look at how red and near infrared differ, read our guide to 660nm vs 850nm.
How the AWA LX500 is set up
The LX500 LED Light Therapy Mask has three modes: red plus near infrared (630 and 850nm), blue (415nm) and a mixed mode. It uses 306 LED chips, runs a 10 minute session and the suggested schedule is 3 to 4 times a week. The LX300 is the more compact option in the same family. Both carry a 1 year warranty.
A note on FDA language
Select devices carry FDA 510(k) clearance for specific, limited uses, and most are sold as general wellness products. The LX300 and LX500 face masks are cleared for the face only. To check any claim yourself, use our guide on how to verify FDA claims.
What to compare when you shop
- Wavelengths listed in nanometers, not just color names
- LED chip count and how the chips are spread across the mask
- Timer length and auto shut off
- Fit, weight and strap comfort
- Eye shields or protection built in
- Warranty length and return terms
Common mistakes
- Choosing on color count alone. More modes do not always mean a better fit for you.
- Skipping the eye protection guidance. Keep your eyes closed or shielded as the manual directs.
- Running longer sessions than the manual suggests. Follow the listed timer.
- Ignoring the manual for cleaning and storage.
Frequently asked questions
Can I use a face mask with my daily routine?
Yes. Clean skin and the manual's schedule are the usual starting point.
Why does the mask have a timer?
A timer keeps each session consistent and prevents overly long use.
Is a mask the same as a panel?
No. A mask sits close to the face for a small area. A panel covers more area at a distance. See our LX300 vs LX500 comparison for the mask lineup.
Who should talk to a clinician first?
Anyone who is pregnant, light sensitive or taking medications that affect light sensitivity. Our guide on photosensitizing medications explains why.
This guide is educational and is not intended to diagnose or replace advice from a clinician. Browse the full mask collection or read our editorial standards.
How we create this guide: We write from product specs and manuals and check each claim against our editorial standards.
Updated October 2026.