how do they work, and are they worth the hype? What Are LED Masks? LED masks are wearable devices that use light-emitting diodes (LEDs) to deliver specific wavelengths of light to the skin.

The semiconductor light-emitting diode, or LED, is a key component of today's technology. Modern households have numerous tiny glowing indicators — provided by LEDs — that are used for reading ...

Using nanostructures, such as nano-patterned surfaces or coatings, scientists can better control how light is emitted and ...