Benzophenone-4
Ingredient Info
Benzophenone-4 is a chemical UV filter used in sunscreens and daily skincare to absorb ultraviolet (UV) radiation and protect skin from sun damage. It works by converting UV energy into heat on the skin's surface.
Benefits
- Provides UV protection against sun damage
- Helps prevent sunburn and skin aging from sun exposure
- Commonly used in broad-spectrum sunscreen formulations
Potential concerns
- May cause allergic contact dermatitis or photoallergy in sensitive individuals (approximately 5% of patch-tested patients in clinical studies)
- Can penetrate the skin barrier, though absorption levels appear lower in real-world use than predicted by laboratory tests
- Limited data on long-term systemic effects from cumulative skin absorption
Science: Recent research shows benzophenone-4 can penetrate intact skin in laboratory conditions, though actual blood concentrations from everyday use are significantly lower than theoretical predictions. Historical data indicates it has a higher rate of allergic sensitization compared to some other UV filters, affecting roughly 1 in 20 individuals tested for sunscreen allergy.
×