Science

FDA Cleared vs. FDA Approved: What LED Device Shoppers Should Know

The short answer “FDA cleared” and “FDA approved” are not interchangeable. Many moderate-risk medical devices enter the U.S. market through the FDA’s 510(k) pathway. In...

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Irradiance, Fluence, and Treatment Time: How LED Light Dose Is Calculated

Why this matters LED product pages often list an impressive-looking number in mW/cm². That number can be useful, but only when you know what was...

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630nm Red Light vs. 850nm Near-Infrared Light: What Is the Difference?

The short answer 630nm and 850nm describe two different wavelengths of light. 630nm is visible red light. 850nm is near-infrared light and is largely invisible...

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What Is Photobiomodulation? A Plain-English Guide to Red and Near-Infrared Light

The short answer Photobiomodulation, often shortened to PBM, is the use of non-ionizing light to influence biological activity. In skincare devices, the light usually comes...

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How LED Light Therapy Works: A Plain-English Guide to Photobiomodulation

How LED Light Therapy Works: A Plain-English Guide to Photobiomodulation Red light therapy sounds futuristic. The actual science, though, has been studied in labs and...

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