Pentaerythrityl Tetrabenzoate

What Is Pentaerythrityl Tetrabenzoate?

Pentaerythrityl Tetrabenzoate is the fully esterified product of pentaerythritol with benzoic acid. With four aromatic benzoate groups, this molecule has excellent UV absorption, high refractive index, and strong film-forming properties. In cosmetics, it functions as a film former, gloss enhancer, and plasticizer. It is used in nail polishes, high-gloss lip products, and sun care formulations where the benzoate chromophores contribute to UV protection and product shine.

Key Skin Benefits

• + High gloss — aromatic structure provides excellent shine
• + UV absorption — benzoate chromophores absorb UVB radiation
• + Film forming — creates durable, flexible barrier films
• + High refractive index — enhances visual appeal of formulations

Pros

• + Excellent gloss and clarity in lip/nail products
• + Inherent UVB absorption provides formulation benefits
• + Durable film former for long-wear products
• + Good plasticizer for brittle polymer systems

Cons

• − Benzoate may cause sensitivity in some individuals
• − High melting point limits cold-process use
• − Not biodegradable in standard timeframes
• − More expensive than aliphatic ester alternatives

Specifications

Safety Ratings

Regional Regulatory Limits

Typical Usage % by Product Type

References

1. CosIng (2025) — Pentaerythrityl Tetrabenzoate. CAS: 4196-86-5. https://ec.europa.eu/growth/tools-databases/cosing/
2. SpecialChem — Benzoate esters. https://cosmetics.specialchem.com/
3. Personal Care Products Council — INCI Dictionary