How Indoor Lighting Compares to Sunlight for Skin
Is your office lighting aging you? The evidence.
Typical indoor LED and fluorescent lighting emits little to no UV, so the meaningful indoor exposure comes from sunlight through windows: standard glass blocks most UVB but lets UVA — the aging wavelength — pass through.
Dermatologists put indoor lighting in perspective: office and home bulbs deliver negligible UV, so if you're worried about aging indoors, the factor that matters is the UVA pouring through nearby windows, not the lights overhead.
Questions we get a lot
Does indoor lighting damage your skin?
Standard indoor lighting — LED, fluorescent, incandescent — emits negligible UV, so the bulbs themselves aren't a meaningful skin-aging source. The exception worth noting is that some lamps do emit a little visible light, but the real indoor concern is sunlight coming through windows.
Do I need sunscreen if I'm indoors near a window?
If you spend the day beside a sunlit window, yes. Standard glass blocks most UVB but lets UVA through, and UVA drives photoaging and pigmentation. Daily broad-spectrum SPF protects skin near windows even though indoor lighting itself poses little risk.
Is light from screens worse for skin than sunlight?
No. The visible light from phones and laptops is a tiny fraction of what the sun delivers, and screens emit no meaningful UV. For skin, sunlight — especially UVA through windows — is by far the bigger factor; screen light is a minor concern for most people.
r/SkincareAddiction: 'Do I need sunscreen indoors, or is office lighting basically harmless?'
