According to studies, the blue light in an LED mask can cause pigmentation in darker skin tones. Here, an expert explains why ...

“Fortunately, blue light is not associated with skin cancers, but it has been shown to lead to premature aging and the development of dark spots,” Zeichner says.

It took over 50 years for Trinity College to claim its “deep dark blue,” and another 30 years for the first Blue Devil to appear on Duke’s campus.