Homosalate
Ingredient Info
Homosalate is a chemical UV filter that absorbs UVB rays to protect skin from sun damage. It's commonly used in sunscreens and is often combined with other UV-blocking ingredients for broader protection.
Benefits
- Absorbs UVB radiation to help prevent sunburn
- Lightweight and works well in various sunscreen formulations
- Allows for flexible product formats (lotions, sprays, etc.)
Potential concerns
- Systemic absorption occurs—research shows it enters the bloodstream at levels exceeding FDA's 0.5 ng/mL threshold after a single application
- Long-term effects of systemic absorption are not yet fully understood
- May cause skin irritation or allergic contact dermatitis in sensitive individuals
Science: A 2020 FDA-led clinical trial found that homosalate, along with five other common sunscreen actives, is systemically absorbed and exceeds the FDA's recommended safety threshold (0.5 ng/mL) after a single application. While this absorption is documented, the clinical significance and long-term health implications remain under investigation.
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