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ADIPIC ACID/DIETHYLENETRIAMINE COPOLYMER.

Valuable CAS 25085-20-5 / FILM FORMING, HAIR FIXING

This synthetic polyamidoamine copolymer forms a transparent film on skin and hair, enhancing texture and providing moisture resistance. It is widely used in skincare and cosmetic formulations for its protective and binding capabilities.

Summary

film former hair fixing antistatic

Science

Mechanism of Action

It creates a cohesive, continuous film on the skin's surface, acting as an occlusive barrier to reduce transepidermal water loss (TEWL). This film also binds other ingredients, improving wear-time and water resistance, and offers antistatic properties.

Research

Clinical Evidence

High confidence
Effective range 0.01–50%
Optimal

N/A

Key findings

  1. 01 Effective from 0.01-20.0% to deposit a transparent polymer film, providing hold, moisture resistance, and texture enhancement (US Patent 10456349B2).
  2. 02 Functions as a waterproof film-forming polymer from 1.0-50.0% to provide adhesion and a continuous protective layer in cosmetic compositions (WO Patent 2005073326A2).

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Water
Optimal pH 2.7 – 7
0 7 14

Stability

Highly stable in aqueous and aqueous-alcoholic solutions. It can be sensitive to very high pH ranges (>9) which may degrade amide bonds over time.

Conflicts

  • Strong oxidizing agents
  • Strongly alkaline environments (pH > 9)

Safety

Safety Profile

CIR Status
Safe as used
Max tested
50%
Sensitization risk Low

The CIR Expert Panel assessed it as safe up to 50% concentration. While potential skin/eye irritation is noted in raw form, it is considered non-irritating at cosmetic use levels.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

ADIPIC ACID/DIETHYLENETRIAMINE COPOLYMER is a valuable film-former that provides effective moisture resistance, texture enhancement, and ingredient adhesion with a low risk of irritation across all skin types.

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