Blue Light is visible light from spectrum 400-510 nm. It has shortest wavelength, but highest energy and potential for damage. It is emitted from LED, smartphones, TV, Laptops, etc. Due to modernization and this pandemic situation, everyone is working from the digital devices. By which we are exposed to blue light approximately 13 hours a day. Even while sleeping we scroll through our Instagram or watch movies which leads to overexposure. The reason for worry is that the blue light emitted from digital devices not only damages our eyes but also have bad effects on skin which leads to photo aging.
How does it Affects our Skin:
Unlike UVA & UVB rays that penetrates only into epidermis, Blue light penetrates into deeper layers in the dermis which leads to more damage. At night time, blue light suppresses the melatonin formation, the hormone that controls our Circadian rhythm – Our sleep/Wake cycles, which leads to free radical formations and aging. A study found that blue light causes oxidative stress, free radical formations which leads to premature skin aging. It also increases melanin formation which increases pigmentation and dark spots.
Protection against Blue Light
As suggested by dermatologist, sunscreen have a very little effect against blue light. Vitamin C and Antioxidants have sown visible results against blue light damage. Some examples of such agents are sunflower sprout extract, seaweed extract, Microalgae, Blueberry algae, carotenoids, etc.
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