HEV is damaging our skin, experts are warning us, but what is it and why is it dangerous – and what can we do to lessen its effects"
 

image: Eucerin
UVA, UVB, HEV…
There’s some useful, concise info on Eucerin’s website (not a brand I use), the main gist of it being:
HEV (High Energy Visible) light is the blue light our smartphones, tablets and computers give off. And some experts including Koko Hayashi at Mirai Clinical are saying it’s as real a threat to our health and skin as damage from the sun.
Hayashi is quoted as saying it’s worse than UVB or UVA as it hits the skin deeper – where collagen, hyaluronic acid and elastic reside.
Stripping things back to basics, the sunlight spectrum consists of: UV, visible and infrared light.  Visible light is the only light we can actually “see” with the human eye, because technically UV and Infrared Light are invisible to humans.
HEV lies within the blue/violet band of the entire light spectrum and has a particularly high energy level and here’s how deeply each light form penetrates the skin:
UVB – these are the burning/sun burn rays believed to cause skin cancer which hit the epidermis (outer layer)
UVA – UVA rays are linked to DNA damage and ageing (photo-ageing)
HEV – is not associated with skin cancer (I would venture to say “yet"”) as there still isn’t a whole lot of proven info about HEV although it’s already ...