Blue light, the first color in the visible light spectrum (as the name suggests, is all kinds of light that we can see with the naked eye), is present in the sun's rays, lamps and LEDs of electronic devices. It contributes to eye problems and signs of premature aging, such as wrinkles and blemishes.
A study by the Institute of Chemistry of the University of São Paulo, published in the Journal of Investigative Dermatology (2017), revealed that combined with UVA radiation, visible light increases the production of lipofuscin - the skin's aging pigment -, in addition to causing damage to the skin. DNA of melanocytes, which are the cells responsible for the pigmentation of the dermis. This accumulation of damage can lead to the development of skin cancer.
However, according to the scientific manager, blue light is not always villainous: it plays an important role in maintaining health, as it regulates our 24-hour cycle, elevates mood and helps with cognitive and memory functions. It is like the UVB sun rays, we need a little bit of them for the synthesis of vitamin D, but, in excess, they can be harmful to health.
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