Many people believe that the LED was discovered by US researchers working in the 1960s. In fact, Henry Round at Marconi Labs noted the emission of light from a semiconductor diode 100 years ago and, ...

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Rory Evans Rory Evans is a writer focused on skin-care and beauty products.

LED masks, which have light-emitting diode in the form of red, near-infrared and blue light, are still making wellness waves as one of the trendiest (and priciest) ways to revamp your skincare routine ...

July 1, 2026 at 9:01 a.m. After 40 years, the past six as editor of the La Jolla Light, Rob Vardon ...