Benzophenone-3
Benzophenone-3, commonly known by its trade names such as Oxybenzone, is an organic synthetic UV absorber with a well-established presence in the global cosmetics and personal care industry.
Physically, it appears as a white to off-white crystalline powder or flake, with excellent solubility in oils, alcohols, and most organic solvents—though it is insoluble in water. This oil-soluble nature makes it highly adaptable to various formulation types, including oil-in-water (O/W) and water-in-oil (W/O) emulsions, as well as anhydrous products like lip balms or oil-based serums.
As a widely regulated and approved ingredient, Benzophenone-3 meets safety standards across major markets, aligning with regional cosmetics regulations to ensure its safe use in consumer products. Its long-standing application history and extensive safety data have solidified its position as a trusted choice for brands seeking effective UV protection in their formulations. Beyond sun care, it also acts as a mild stabilizer for other light-sensitive ingredients, helping to preserve the efficacy of skincare actives that are prone to UV degradation.
Key Benefits & Functions
Its main strength is broad-spectrum UV protection, absorbing both UVA2 (causes premature aging like fine lines) and UVB (triggers sunburn/redness). It blends seamlessly with other UV absorbers (e.g., Ethylhexyl Methoxycinnamate, Avobenzone) or physical filters (zinc oxide) to boost coverage and reduce white cast. Used in anti-aging/brightening products, it shields actives (vitamin C, niacinamide) from UV breakdown. Within recommended limits, it has low irritation, fitting normal, combination and slightly sensitive skin.
Key Technical Parameters
|
Appearance |
Pale yellow crystalline powder |
|
Purity |
≥99.0% |
|
Melting point |
60.0℃~66.0℃ |
|
Heavy metals |
5ppm max |
|
Loss on drying(Moisure) |
≤0.5% |
|
Ash |
≤0.1% |
|
Obsorption rate(E1%1cm at 285 nm in ethanol) |
≥630 |
|
Obsorption rate(E1%1cm at 325 nm in ethanol) |
≥400 |
Mechanism of Action
Its UV protection relies on “energy absorption-dissipation.” With a benzophenone core and -OH/-OCH₃ groups, it absorbs UVA2/UVB photons, shifting from a stable ground state to an excited state. Instead of releasing harmful free radicals, it dissipates excess energy as harmless low-level heat, returning to ground state—sustaining protection. It has moderate photostability; pairing with photostabilizers (e.g., Octocrylene) prevents breakdown, ensuring consistent performance during extended outdoor use.
Applications
● Sun Protection Products:providing broad-spectrum protection against UVB (280–320 nm) and short-wave UVA (320–340 nm) radiation
● Color Cosmetics:This extends product shelf life and maintains color vibrancy .
● Hair & Nail Care: protect color from fading due to sun exposure.
Advantages
● Broad-Spectrum UV Protection:Absorbs both UVB (responsible for sunburn) and short-wave UVA (linked to skin aging)
●Formulation Flexibility:Oil-Soluble & Easy Integration
● Light & Heat Resistance
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