The kind of light emitted by phone screens, computer screens and TVs — and just stop for one moment to think about which of these devices you hold closest to your face — is called high-energy visible (HEV) light, but is better known as blue light (though not the kind meant to get the attention of Kmart shoppers). It may potentially penetrate the skin even more deeply than UV rays, damaging its elastin, collagen, and hyaluronic acid. While most sunscreens will not protect against blue light-induced wrinkling, Shape magazine notes that several high-dollar HEV protectants are now being marketed specifically towards those worried about tech rays.
Are these products worth the cost? Elizabeth Tanzi, M.D., who is an associate clinical professor of dermatology at George Washington University Medical Center, doesn’t think we need to start shelling out big bucks just yet, since damage from HEV light has yet to reach the emergency threshold. Dr. Tanzi warns that the sun is still the biggest source of skin damage, so “it’s crucial not to forgo sunscreen in favor of an HEV guard.”