Visible Light Is the Sun-Damage Factor Nobody Talks About
Both your screen and the sun emit visible light, and it can darken skin.
Visible light makes up roughly 45% of sunlight (UV is only ~5-7%), and high-energy visible light can worsen pigmentation, especially in medium-to-deep skin tones.
Dermatologists note that standard clear sunscreens do little against visible light; tinted formulas with iron oxides are the practical way to address it.
Questions we get a lot
Is visible light bad for skin?
Visible light makes up about 45% of sunlight. Research shows high-energy visible (blue) light can worsen pigmentation and melasma, especially in medium-to-deep skin tones. Tinted sunscreens containing iron oxides help shield against it, which clear sunscreens generally do not.
How do I protect my skin from visible light?
Look for a tinted sunscreen containing iron oxides, which absorb visible (including blue) light that clear sunscreens let through. Tinted mineral or hybrid formulas are especially useful for anyone prone to melasma or post-inflammatory hyperpigmentation. Apply it as your last skincare step, like any sunscreen.
Does the blue light from my phone or laptop damage skin?
Devices emit far less visible light than the sun, and current evidence suggests typical screen exposure causes little skin damage compared with daylight. The bigger source of pigment-worsening visible light is the sun, including through windows — which is why a tinted, iron-oxide sunscreen is the more meaningful step.
r/30PlusSkinCare: 'Does visible light from the sun (or my screen) really cause hyperpigmentation?'