Avobenzone
Its inclusion is considered essential for any product claiming genuine broad-spectrum protection, moving beyond the prevention of sunburn to defend against the deeper, often imperceptible damage that leads to premature skin aging and other long-term health concerns. Avobenzone, is a synthetic organic UV absorber and a staple in global sun care. A top choice for robust long-wave UVA protection, it appears as a pale yellow crystalline powder—soluble in oils, silicones, and ethanol (insoluble in water)—ideal for oil-in-water (O/W) and water-in-oil (W/O) emulsions. It ensures smooth textures and even UV protection in finished products, plus it meets regional cosmetics safety standards, enabling cross-market sun care lines.
Its biggest strength is targeted long-wave UVA protection (unlike absorbers limited to medium-wave UVA/UVB). Long-wave UVA penetrates skin’s dermis, damaging collagen, causing pigmentation, and worsening wrinkles—Avobenzone blocks it to fight photoaging. It also pairs seamlessly with UVB absorbers (e.g., Ethylhexyl Methoxycinnamate) for broad-spectrum protection, and with physical filters (zinc oxide) to boost UVA coverage and reduce white cast. It shields anti-aging ingredients (vitamin C, retinol) from UV damage. Low-irritant and non-comedogenic, it suits sensitive, oily, and combination skin, with clinical backing for low phototoxicity/photoallergy risk.
Key Technical Parameters
| Appearance | White to pale yellow powder |
| Identity(IR) USP<197> | Matches reference spectrum |
| Identity(Retention time) USP<621> | Matches reference retention time |
| UV specific extinction (E 1% 1cm at 357 nm in ethanol) Spectrophotometry USP<197U> | 1100~1180 |
| Melting point USP<741> | 81.0 ℃ ~86.0 ℃ |
| Loss on drying (%) USP<731> | 0.50max |
| Chromatographic purity GC USP<621> - Each impurity (%) | 3.0max |
| Chromatographic purity GC USP<621> - Total impurities (%) | 4.5max |
| Assay (%) GC USP<621> | 95.0~105.0 |
| Residual solvents - Methanol (ppm) | 3000max |
| Residual solvents - Toluene (ppm) | 890max |
| Microbial purity - Total amount of aerobe | 100 CFU/g max |
| Microbial purity - Total yeast and moulds | 100 CFU/g max |
Applications
● Daily sunscreen products
● Outdoor high-protection sunscreen products
● Sunscreen-infused makeup (foundations, CC creams)
● Anti-aging products with sun protection
Advantages
● Protects against long-wave UVA
● Works with other sun filters for broad-spectrum care
● Suitable for sensitive skin
● Less skin irritation
● Stabilizes anti-aging actives
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