Red-light devices are all over social feeds and make enormous promises. From the many, ... In comparison, the Lifepro Lumicure has three LEDs in a 0.78-square-inch circle, ...

In this episode, we misstated that the irradiance, or power over an area, of red light devices is measured in megawatts per square centimeters. It is milliwatts, not megawatts. June 2025 ...