They do publish the irradiance. Just not to you.
2 of the 6 masks we track state an irradiance in their FDA submission and nowhere a buyer would ever look. We find those numbers, put them next to the marketing claim, and measure the hardware ourselves.
Of the 6 masks tracked here, 4 publish an irradiance figure where a buyer can find it1 — but 5 state one in their 510(k) submission to the FDA, a public document. Therabody TheraFace Mask and Shark CryoGlow disclose a full per-mode breakdown to the regulator while advertising LED counts and session times to customers. Neither of those tells you the dose your skin receives.
| Device | Wavelengths | Claim | Measured | Δ | Price |
|---|---|---|---|---|---|
| Dr. Renú SpectraLift Advanced | 630 nm · 850 nm · 465 nm · 530 nm | 50 | queued | — | €279 |
| Omnilux Contour Face | 633 nm · 830 nm | 30 | queued | — | — |
| CurrentBody Skin LED Mask Series 2 | 633 nm · 830 nm · 1072 nm | 30 | queued | — | — |
| Therabody TheraFace Mask | 633 nm · 830 nm · 415 nm | not published | queued | — | — |
| Shark CryoGlow | 630 nm · 415 nm · 830 nm | not published | queued | — | €279.99 |
| Dr. Dennis Gross DRx SpectraLite FaceWare Pro | 415 nm · 605 nm · 630 nm · 660 nm · 880 nm | 75 | queued | — | — |
The full comparison — irradiance, dose and verified FDA record for all 6 masks →
Which manufacturer tells you the most about its own device →
What we grade, and how hard
Every health claim on this site carries an evidence grade, applied from a published rubric rather than assigned by feel. A grade describes the strength of the trial base for that specific claim — not how good the device is.
Does red light therapy reduce wrinkles?
moderate evidence
Red light at 633 nm and near-infrared at 830 nm produce small but measurable improvements in fine lines, skin texture and collagen density in controlled trials. Effects appear after 8–12 weeks of consistent use and are modest — visible in measurement, subtle in the mirror.
Does blue light therapy clear acne?
moderate evidence
Blue light near 415 nm is antibacterial against Cutibacterium acnes and reduces inflammatory lesions in controlled trials. The evidence is weaker than for topical or oral prescription treatment, and most consumer masks emit 460–470 nm rather than the 415 nm the trials used.
The study library
Every trial we rely on has its own page, with sample size, protocol, effect and — the field almost nobody publishes — who funded it3. Claims on this site link to those records, so you can check the reasoning rather than trust it.
Last verified