Blue light, also known as HEV (high-energy visible light), is a visible light with a wavelength of 435-500 nm, which is emitted by electronic devices (screens of mobile phones, computers, tablets). This light has a confirmed negative effect on the skin, in which oxidation processes and various types of inflammation are induced under its influence. Chronic exposure to blue light significantly accelerates the aging process.
Blue ligth (HEV) triggers the so-called oxidative stress, thereby causing the destruction of skin cells. According to the available data, HEV radiation penetrates the skin deeper than the equally dangerous UV radiation. Moreover, blue light shortens the lifespan and proliferation of fibroblasts, and can also cause DNA damage.
A specialized test for protection against HEV allows you to quickly determine whether a given cosmetic will effectively protect the skin against the negative effects of blue light.