Adipic Acid/Neopentyl Glycol/Trimellitic Anhydride Copolymer
What is Adipic Acid/Neopentyl Glycol/Trimellitic Anhydride Copolymer?
Adipic Acid/Neopentyl Glycol/Trimellitic Anhydride Copolymer is a synthetic polyester resin produced through the polymerization of adipic acid (a dicarboxylic acid), neopentyl glycol (a diol), and trimellitic anhydride (a tricarboxylic acid derivative). This creates a branched, film-forming polymer commonly incorporated into nail polishes, hair sprays, sunscreens, and long-wear makeup products. In formulations, it functions by depositing a thin, continuous, and elastic layer on the skin, hair, or nails upon drying. This film improves ingredient retention, boosts water repellency, enhances adhesion to surfaces, and provides properties like shine, hold, or transfer resistance. Its flexibility prevents cracking, making it suitable for dynamic applications like styling or sun protection. Regulatory bodies recognize it for safe use in cosmetics at typical concentrations.
Roles in Formulation
This ingredient serves the following purposes in cosmetic formulations:
Benefits
Enhances product longevity by forming a durable protective layer.
Provides water resistance to help products withstand moisture.
Improves texture and adherence for smoother, longer-lasting application.
Who It's For
A quick guide for who this ingredient may suit (and who should be cautious).
| Who May Benefit | Who Should Avoid |
|---|---|
| Individuals seeking long-wear makeup or sunscreens. | Those with rare sensitivities to synthetic polymers. |
| People with active lifestyles needing sweat-resistant formulas. | People experiencing irritation from film-forming agents. |
| Users of hair styling products for better hold and shine. | Individuals preferring minimalist, polymer-free formulations. |
Safety Notes
- Considered low hazard in cosmetic applications per safety assessments.
- Non-comedogenic, unlikely to clog pores.
Frequently Asked Questions about Adipic Acid/Neopentyl Glycol/Trimellitic Anhydride Copolymer
What does this copolymer do in products?
It creates a flexible film that boosts water resistance, hold, and wear time on skin or hair.
Is it safe for daily use?
Yes, it holds a low safety rating and is widely used in approved cosmetic formulas.
Does it clog pores?
No, it has a comedogenic rating of zero, suitable for acne-prone skin.