Butyl Methoxydibenzoylmethane
Ingredient Info
Butyl methoxydibenzoylmethane, commonly known as avobenzone, is a UV filter used in sunscreens to protect skin from UVA rays (the sun's aging rays). It absorbs UV radiation and converts it into harmless heat, helping prevent sun damage and premature aging.
Benefits
- Broad-spectrum UVA protection against sun damage and premature skin aging
- Low skin absorption—most of the ingredient stays on the surface rather than penetrating deeply
- Long history of safe use in over-the-counter sunscreen products
Potential concerns
- Rare photoallergy reported in clinical case studies (sensitivity to sunlight triggered by the ingredient)
- May cause mild dermal irritation in sensitive individuals, though uncommon
Science: A 2025 comprehensive toxicology review found avobenzone has a suitable safety profile with no clear markers of toxicity. Clinical studies confirm low skin absorption (≤0.59% of applied dose), and safety margins exceed 100-fold when used at permitted levels (up to 3%). No evidence of carcinogenicity, genotoxicity, or hormonal disruption was identified.
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