Home masks and clinic panels deliver different doses.
Many LED studies used clinic panels at doses far above what home masks deliver per session. Dose (J/cm²) is irradiance (mW/cm²) multiplied by time, so a low-output mask needs more time or more sessions to approach a clinic dose, and more is not always better.
How dose is calculated
Dose in J/cm² equals irradiance in mW/cm² multiplied by seconds, divided by 1,000. A mask at 30 mW/cm² for 10 minutes delivers about 18 J/cm². At 10 mW/cm² for 10 minutes, it delivers about 6 J/cm². These numbers assume constant output measured at the skin, which brands rarely confirm.
Doses used in the studies
Reported study doses range widely. A 2005 clinic study used 126 J/cm² of red light per session. A 2006 acne study used 96 J/cm² of red and 48 J/cm² of blue. A 2023 eye-wrinkle trial used 3.8 J/cm², and a 2025 red mask trial used about 8 J/cm².
- Combined 633 nm and 830 nm light for wrinkles around the eyesUncontrolled clinical study · 2005
- Red vs amber light for eye wrinkles, at the same doseRandomised split-face trial · 2023
- How often should you use a red LED mask? A sham-controlled trialRandomised, sham-controlled, double-blind trial · 2025
Why more is not always better
Light therapy has a biphasic dose response: small doses stimulate cells, while large doses can inhibit them. That is one reason researchers caution against simply adding power or time. Follow the device’s manual.
Estimated dose for each mask
Six of the ten publish an irradiance figure. Multiplying it by the listed session time gives an estimated dose per session. These are calculations from manufacturer claims, not measurements.
- CurrentBody Skin LED Mask Series 2≈18 J/cm² over 10 min
- CurrentBody Skin LED Face Mask Series 3No published irradiance
- Dr. Dennis Gross DRx SpectraLite FaceWare ProNo published irradiance
- Dr. Renú SpectraLift Advancedup to 45 J/cm² over 15 min
- Nanoleaf LED Light Therapy Face Mask47–62 J/cm² over 10 min
- Omnilux Contour Face≈18 J/cm² over 10 min
- Shark CryoGlow FW312No published irradiance
- Silk’n LED Face Mask 1008–54 J/cm² over 10 min
- The Light Salon Boost LED Face Mask (Boost Advanced)≈18 J/cm² over 10 min
- Therabody TheraFace Mask GloNo published irradiance
Questions
How do I calculate LED mask dose?
Multiply irradiance in mW/cm² by session time in seconds and divide by 1,000 to get J/cm². This assumes constant output at the skin.
Do home masks match clinic studies?
Often not per session. Several studies used clinic panels at much higher doses, while recent mask trials used 4–8 J/cm² per session.