Part of the visible spectrum, blue light comes not only from the sun but also from the screens of our devices.
Studies have shown that it can stimulate melanin production, which leads to hyperpigmentation, especially in people with darker skin.
Blue light also damages collagen, accelerating the formation of wrinkles. For example, experiments have shown that when the device is held one centimeter away from the skin for an hour, collagen can begin to break down.
Blue light also affects sleep, which indirectly affects the condition of the skin. It suppresses the production of melatonin, a hormone that regulates sleep.
Lack of sleep increases cortisol levels, which breaks down collagen and weakens the skin’s protective barrier, making skin more vulnerable to damage.
Source: Ferra
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