Sun protection ingredients (chemical or mineral UV filters) absorb or reflect ultraviolet radiation to reduce skin damage, including sunburn, photoaging, and skin cancer risk. They are formulated into sunscreens and many daily skincare products.
| Reported effect | How often | Notes |
|---|---|---|
Skin irritation or stinging | Common | More frequent with chemical filters, especially on sensitive or broken skin and around the eyes. |
Acne or clogged pores | Uncommon | Associated with heavier or occlusive formulations rather than the filters themselves. |
Contact dermatitis (irritant or allergic) | Uncommon | Reported with certain chemical filters and fragrances or preservatives in the base. |
Photoallergic or photocontact reaction | Rare | Triggered when the filter reacts with UV exposure; oxybenzone and some others are more commonly implicated. |
White cast or cosmetic intolerance | Common | Mainly with mineral (zinc oxide/titanium dioxide) sunscreens; not a medical adverse effect. |
Systemic absorption of certain chemical filters | Uncommon | Detected in blood in studies; clinical significance not established and under ongoing investigation. |
Severe allergic reaction (anaphylaxis) | Very rare | Isolated case reports, primarily with chemical filters. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.