Dermatology / skin health
LED skin therapy systematic review and meta-analysis
Ngoc LTN, Moon JY, Lee YC. Photodermatology, Photoimmunology & Photomedicine. 2023.
This systematic review and meta-analysis evaluated LED use for skin therapy and found statistically significant overall effects for red and blue LED light in acne treatment.
Evidence grade
moderate
Effect direction
positive
Panel relevance
partially-replicable
Key findings
- The review supports acne as one of the more studied LED skin indications.
- The evidence includes both red and blue LED light, so it should not be cited as red-only proof.
- Consumer relevance is moderate because LED skin devices can target superficial facial skin, but protocols differ.
Protocol details
| Wavelengths | Not reported nm |
|---|---|
| Irradiance | Not reported mW/cm2 |
| Fluence | Not reported J/cm2 |
| Session time | Not reported minutes |
| Frequency | Varied across included skin therapy studies |
| Duration | Varied across included skin therapy studies |
| Treatment area | Skin |
| Device type | LED skin therapy devices |
Caveats
- Blue-light and red-light acne results should be separated when writing red-light-only claims.
- Meta-analysis at the skin-therapy level does not define a single home mask or panel protocol.