Several pieces of evidence have suggested that blue light can inactivate various pathogenic bacteria. Previously in vitro and in vivo studies using blue light in the spectral range of 400–470 nm ...

Researchers have designed and tested ‘human-centric’ LEDs that emit different wavelengths of blue light depending on whether it’s daytime or nighttime, reducing the disruptive effect artificial light ...

They claim to fix fine lines, blemishes and redness – but which stand up to scrutiny? We asked dermatologists and put them to the test to find out ...

Our deputy beauty editor tapped experts and enlisted a panel of testers to find the best LED face masks with skin-soothing red light therapy.

It’s hard to believe that the first blue LED didn’t arrive until 1993. They look simple, but looks are deceiving (Fig. 1). 1. Image showing a blue InGaN-based LED with gold wire contacts (0.4 × 0.4 mm ...

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