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Dr. Anetta Reszko on the effects of blue light on Skin

Posted by Emily Payne on

The scientific community is just beginning to understand the impact of chronic HEV blue light on human eyes and skin.  Even though short-term use of blue light does not seem to cause acute damage to the skin, chronic long-term use of blue light leads to several changes similar to the changes seen with chronic exposure to ultraviolet A light (UVA).

The primary pathway of HEV blue light-induced cellular damage is the oxidative stress and generation of reactive oxygen species (ROS) that subsequently lead to:

1. Direct degradation and breakdown of primary structural proteins of the skin like collagen and elastin. 

2. Direct DNA damage and subsequent DNA mutations that may lead to cellular aging and development of cancer. 

3. Oxidation of epidermal lipids in the skin leading to impaired skin barrier function and increased inflammation.

Clinically, overexposure to blue light can accelerate signs of aging; worsening the wrinkles, fine lines, uneven skin tone, dullness and hyperpigmentation in a similar manner which is frequently associated with UV radiation and chronic sun exposure. 

What is the best way to protect yourself from the danger of screens?

The simple answer is to limit exposure.  Since this option is not always practical, use EyeJust blue light blocking screen protector. 

Dr. Anetta Reszko Assistant Professor of Dermatology Weill Cornell New York Presbyterian Medical 

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