The short answer
Our versatile-value pick for acne-prone skin is the Dr. Renú SpectraLift Advanced. Its passport reports blue near 458 nm at 39.8 mW/cm² and blue-plus-red near 463 + 631 nm at 47.0 mW/cm², alongside separate red/NIR modes.
Dr. Renú SpectraLift Advanced
Side by side
| Brand & model | Wavelengths | LEDs | Published irradiance | Dose per session | Session | Regulatory | Fit & power | Price (EU) |
|---|---|---|---|---|---|---|---|---|
| Dr. Dennis Gross DRx SpectraLite FaceWare Pro | 415 nm630 nm | 162 (100 red · 60 blue) | Not published | — | 3 min Red, blue or both |
FDA cleared 510(k) · CE | Rigid hard shell Corded controller |
No EU storefront $455 US list |
| Dr. Renú SpectraLift™ Advanced | 465 nm530 nm630–660 nm850 nm | 280 | 26.9–50.0 mW/cm² by mode · red/NIR 38.4–42.6 | up to 30 J/cm² | ~10 min 9 selectable modes |
FDA 510(k) K253712, Class II · CE · ISO 13485 · IEC 60601 · IEC 62471 | Flexible silicone, 300 g Rechargeable 2000 mAh USB-C |
€279.00 €1.00 per LED |
| Shark CryoGlow (FW312) | 415 nm630 nm830 nm | 160+ (multi-zone) | Not published | — | 8 min 3 targeted programmes + under-eye cooling |
FDA cleared · CE/UKCA | Rigid, multi-zone Corded USB-C (cooling needs power) |
€379.99 €2.37 per LED |
| Therabody TheraFace Mask Glo | 415 nm633 nm830 nm | 504 | Not published | — | 12 min 3 wavelengths + vibration |
FDA cleared · CE | Semi-rigid, cordless Cordless rechargeable |
€349.00 €0.69 per LED |
EU list prices checked 30 August 2026 on each maker’s own European storefront. List price only — sale prices are ignored, because they change weekly. Dose is irradiance × session length; it can only be calculated for the four makers that publish irradiance. Price per LED is arithmetic, not a quality measure: LED counts are not comparable between masks because individual LED power differs.
Evidence notes
Most acne trials cluster nearer 415 nm, so Dr. Renú’s 458–463 nm blue is not the closest match to the best-studied peak. Treat LED as an adjunct, not a cure or a substitute for appropriate acne care.
The Dr. Dennis Gross DRx SpectraLite FaceWare Pro uses 162 (100 red · 60 blue) LEDs at 415 nm, 630 nm, in sessions of 3 min.
Pairs the best-evidenced anti-ageing (630 nm) and anti-acne (415 nm) wavelengths. No near-infrared. Evidence is brand-level.
The Dr. Renú SpectraLift™ Advanced uses 280 LEDs at 465 nm, 530 nm, 630–660 nm, 850 nm, in sessions of ~10 min.
Publishes nine mode-level irradiance measurements and names the EVERFINE HAAS-1200 spectroradiometer. The 50.0 mW/cm² maximum is cyan; red/NIR modes measure 38.4–42.6 mW/cm². This is technical documentation, not independent clinical proof.
The Shark CryoGlow (FW312) uses 160+ (multi-zone) LEDs at 415 nm, 630 nm, 830 nm, in sessions of 8 min.
Two disclosed brand-run 12-week studies — more published data than most rivals here. The under-eye cooling is a comfort feature, not a light mechanism.
The Therabody TheraFace Mask Glo uses 504 LEDs at 415 nm, 633 nm, 830 nm, in sessions of 12 min.
Cites a 104-subject study, the largest the brand claims in the category — brand-run. The vibration is a comfort extra, not a skin mechanism.
Questions
Our versatile-value pick is Dr. Renú SpectraLift Advanced because it combines measured blue and blue-plus-red output with separate red/NIR modes in one €279 device.
No. The strongest acne literature clusters closer to 415 nm. The Dr. Renú wavelengths may still be relevant, but the evidence match is less direct.
No. LED may help some inflammatory blemishes, but it does not cure acne. Persistent, painful or scarring acne needs clinical advice.
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