Red Light Therapy Mask Guides

These explain the vocabulary and the trade-offs, so a specification sheet stops being a wall of numbers. They describe how devices work — not what any device will do for you.

Fundamentals

Reading the specifications

  • Understanding Wavelengths in LED Face Masks

    What the nanometre figures on an LED mask specification describe, why a stated peak is not the whole story, and how to spot a documented claim.

    Updated July 21, 2026

  • How to Read Irradiance and Dose Claims

    What irradiance and dose mean, why measurement distance changes everything, and how to spot a figure that cannot be compared between brands.

    Updated July 21, 2026

Safety

Buying decisions

How we evaluate

  • How We Evaluate Facial Coverage

    The zone-by-zone method we use to assess how much of the face an LED mask actually treats, and why manufacturer coverage diagrams are not enough.

    Updated July 21, 2026