Scientifically, this would be clocked in terms of irradiance: a measurement of power density at the source of the LED. The Shark CryoGlow hits a maximum radiance of 128mW/cm² compared to the 30mW ...

Want more from NBC Select? Sign up for our newsletter, The Selection, and shop smarter. The Shark CryoGlow is the brand’s first LED face mask and FDA cleared device. It has four treatment ...

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LED masks. The category is a social media darling ... Along with offering both red and blue light, the Shark mask also touts infrared LEDs. (Research shows that infrared light can help improve ...