Face mask effectiveness: What we know now 02:59. When the COVID-19 pandemic took off in 2020, so too did questions over the effectiveness of wearing a face mask to prevent the spread of the virus.

Qudi Has Designed an LED Face Mask That Shows Its User’s Emotions: Containing 199 smart LED pixels.

I tested the Biodance Bio-Collagen overnight mask, which promises hydration and dewy skin. The results? Less impressive than expected.

This LED face mask combines red, blue, and near-infrared light with vibration therapy, but don’t expect overnight results. Here’s our review after 3 months of testing.