Photoprotection
Photoprotection — the range of strategies used to shield skin from ultraviolet and, increasingly, visible light, in order to limit sunburn, photoaging, and pigment changes. It includes topical sunscreens, protective clothing and shade, and antioxidant support that helps counter light-induced free-radical damage.
Key points
- UVB is most associated with sunburn while UVA penetrates deeper and contributes strongly to photoaging.
- Broad-spectrum sunscreens are designed to cover both UVA and UVB wavelengths.
- Physical measures such as hats, clothing, and seeking shade complement topical sun protection.
- Emerging research highlights visible light as a factor in pigmentation, especially for deeper skin tones.
Frequently asked
Is sunscreen the only form of photoprotection?
No; sunscreen is one important layer, but clothing, shade, timing outdoor activity, and antioxidants all contribute to a fuller photoprotection approach.
Does photoprotection matter indoors?
It can, because UVA and visible light pass through windows and screens emit visible light, though everyday indoor exposure is generally much lower than outdoors.
Related topics
This is a foundational entry in the SYNC Skin Encyclopedia and is expanded over time. Educational information only — not medical advice.
