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ADIPIC ACID/NEOPENTYL GLYCOL COPOLYMER.

Valuable CAS - / BINDING, FILM FORMING, SKIN CONDITIONING

This synthetic polyester functions primarily as a film-former and texture enhancer. It is designed to improve product adherence and provide a smooth, 'blurring' finish on the skin.

viscosity controlling film forming binding skin conditioning

Science

Upon application, it forms a continuous, flexible film on the skin, which helps to retain moisture and enhance the adherence of other active ingredients. It also stabilizes emulsions by increasing viscosity, contributing to a refined texture.


Research

High confidence
Effective range ≤1%
Optimal

1%

Key findings

  1. 01 The CIR Expert Panel indicates 1.0% as a typical maximum concentration for leave-on dermal skincare to ensure non-irritancy. Higher concentrations, up to 32.8%, are primarily used in nail products.

Transparency

Not commonly dusted

The Formula

Solubility
Oil
Optimal pH 4 – 8
0 7 14

Stability

The copolymer exhibits high resistance to hydrolysis and excellent thermal stability. It is often supplied as a blend with esters or triglycerides to facilitate seamless incorporation into formulations.

Conflicts

  • Highly alkaline environments (may lead to slow polymer degradation)
  • Purely water-based systems without emulgents (due to oil solubility)

Safety

CIR Status
Safe as used
Max tested
1%
Sensitization risk Low

Deemed safe in current cosmetic practices. For leave-on dermal products, concentrations are generally kept below 1% to mitigate potential sensitization, although up to 32.8% is used in nail applications.


Your Skin

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Low
Comedogenicity Low

Our Assessment

Valuable

This versatile film-former enhances product performance and skin texture, offering broad compatibility and a low risk profile for precision skincare formulations.


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