Blue light and skin aging: how to protect yourself

“If you’re feeling blue try painting yourself a different color.” — Hannah Cheatem

When I think of blue light, I am reminded of the time I was driving on Wilshire Boulevard at night and from my rearview mirror I saw the flashing lights of a police car signaling me to stop. My violation — over speeding. That was terrifying! Never will I do it again.

But we are talking about a different kind of blue light. This particular blue light is a form of visible light, also known as high-energy visible (HEV) light. It is one of the several colors in the visible light spectrum, the others are red, orange, yellow, green, indigo, and violet. Blue light represents about one third of all visible light — a pretty high percentage — so blue light is practically everywhere.

By far the largest source of blue light is from the sun itself. But we also get it from artificial light sources such as LED light bulb, fluorescent bulbs, your flatscreen tv, your laptop, your tablet, your cellphone, all these digital devices that you have in your hand and keep in your house.

Both natural blue light from the sun and artificial blue light during the day can boost attention, reaction time, and moods. But studies to date show blue light from electronic devices can lead to changes in your skin cells, including the…