This article explains irradiance for B2B buyers sourcing private-label LED masks — without turning output data into medical promises.
Why suppliers disagree on mW/cm²
| How suppliers often measure | What the number reflects | Comparable to worn use? | Buyer note |
|---|---|---|---|
| Sensor on LED through silicone (single point or average) | Local output at the bead | Partial — still not skin plane | Ask which mode & intensity level |
| Bare LED (no silicone) | Highest headline number | No — not how the mask is worn | Common source of inflated mW/cm² |
| Single bead × total bead count | Theoretical sum | No | Red flag if no test report |
| ~1.5 cm from face (skin plane) | Lower, more realistic dose at skin | Closer to use — rarely published | Radiant does not use this for public labels |
| Unstated method | Unknown | Unknown | Do not compare until method is disclosed |
MMZ01 reference table (Radiant internal data)
| MMZ01 mode | Intensity 1 | Intensity 2 | Intensity 3 |
|---|---|---|---|
| Red + NIR (850 + 630 nm) | 12 mW/cm² | 18 mW/cm² | 22 mW/cm² |
| Blue (415 nm) | 14 mW/cm² | 21 mW/cm² | 29 mW/cm² |
| Yellow (590 nm) | 6 mW/cm² | 9 mW/cm² | 10 mW/cm² |
How to request comparable data from any factory
- Ask for the therapy mode and intensity level tied to the headline number.
- Ask whether the sensor was on the LED through silicone, on bare LEDs, or at a stated distance from the face.
- Request the underlying test memo or report — not a catalog sentence alone.
- Match the document model number to your PO SKU (see our certificate & model match guide).
Product page: MMZ01 LED Facial Mask · Wholesale: OEM / private label quote · Deep dive on report types: how to read LED mask test reports
FAQ
Is 22 mW/cm² good for an LED face mask?
It depends on mode, intensity level, and how it was measured. Radiant publishes 22 mW/cm² for MMZ01 Red+NIR at intensity level 3 using a through-silicone bead method (internal Dec 2024 data). Without the same method, do not rank masks by headline mW/cm² alone.
Why do some masks claim 40–50 mW/cm²?
Common reasons include bare-LED measurement (no silicone), multiplying a single bead reading by total bead count, or unstated methods. Radiant’s internal training notes that higher numbers are not automatically safer or better for daily home use.
Should irradiance be as high as possible?
Not necessarily. Radiant’s product rationale balances effect with safe home-use behavior (timed sessions, intensity levels). Compare claims only when measurement method and distance are disclosed.
Last updated: 2026-08-20
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