2. Blue Light (or HEV = High Energy Visible Light)
In other words, ‘blue light’ is the visible light from the color spectrum of the sun. This light ensures that we wake up in the morning, are alert and focused. That’s good and necessary.
But too much blue light can disrupt our hormone balance (think of the production of melatonin, our sleep hormone) and is not good for our skin. This light penetrates even deeper into the skin than UVA and can affect collagen and elastin (read: weaker skin and wrinkles). It can also cause (hyper)pigmentation.
How do we get too much blue light?
Not only day light contains a lot of blue light (just look at the
sky), but also our screens (TV, telephone, tablet, computer) and indoor lighting cause an overkill of blue light. They also call it ‘junk light’.