Which light do I actually need?
Red for the face if you can only have one. Red plus near-infrared for anything below the neck or for recovery. Everything else on a 7-colour wheel is decoration.
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The light wing · 0 devices
Every light device, sorted by what the light does.
Mats, masks, panels, belts, wands, eye patches and scalp caps all sell on the same three words: red light therapy. The wavelength decides whether a device can do anything. Here they are, grouped by wavelength and by the part of you they are built for, with the studied numbers next to each one.
The two bands that decide everything on this page
| Wavelength | Name | What it does |
|---|---|---|
| 630 to 660 nm | Red | Upper skin layers. Tone, texture and fine lines over eight to twelve weeks. |
| 810 to 850 nm | Near-infrared | Deeper. Recovery, inflammation, collagen support in combined-wavelength studies. Invisible; you feel gentle warmth. |
Before you buy
The light questions people argue about.
Do more LEDs mean better results?
More LEDs at the right wavelengths, close to the skin, mean more dose per minute. More colours mean a brighter light show. Count diodes at 630 to 660 and 810 to 850 nm; ignore the rest.
Is any of this dangerous?
At consumer powers, red and near-infrared are not. Keep eyes closed or shielded under any bright LED, and if you have melasma talk to a doctor before adding heat and light to your face.
How long until I see something?
Eight to twelve weeks of three to five sessions a week. A device that promises seven days is selling the photograph.
Longer answers: is red light therapy a scam, the five specs that decide it, real wrap or heating pad, how long and how often, darker skin tones.