Gosset Avobenzone Overview
Avobenzone is a synthetic, oil-soluble chemical in the dibenzoylmethane class used as a broad-spectrum UVA filter in sunscreens and skincare products[3][8][10]. Chemically designated as butyl methoxydibenzoylmethane, it has the molecular formula C20H22O3 and absorbs ultraviolet radiation primarily in the 320–400 nm UVA range, peaking near 357 nm[2][3][1][10]. Avobenzone is globally recognized as a leading UVA protector and is the only UVA filter currently approved in the United States for sunscreens, although it is frequently formulated with other stabilizing agents to counteract its inherent photoinstability[9][3][1]. When avobenzone absorbs UV radiation, it undergoes tautomeric changes and dissipates energy as heat, thus protecting skin from photoaging, DNA damage, and hyperpigmentation[1][3]. It is not a biological receptor or therapeutic target but is considered a topical photoprotective agent critical for reducing long-term UV-induced skin damage[3][10]. Avobenzone does not have an approved or recognized abbreviation as a biological "target", and the query is technically incorrect because "ultraviolet radiation absorption by avobenzone" is a chemical property or action, not a biomedical target; thus is_incorrect is set to true.
Mechanism of Action
Absorbs UVA (and some UVB) radiation, dissipates UV energy as heat, thus preventing UV-induced skin damage[1][3][10]
Biological Functions
Disease Associations
Safety Considerations
- Photoinstability (rapid photodegradation with UV exposure unless stabilized)[3][9][7]
- Potential formation of free radicals and byproducts upon photodegradation[3][7][9]
- Some reports of skin irritation and allergic reactions in sensitive individuals