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Moumoujus

BUTYL ACRYLATE/ETHYLTRIMONIUM CHLORIDE METHACRYLATE/STYRENE COPOLYMER.

Valuable CAS - / DEODORANT, FILM FORMING, HAIR CONDITIONING

A positively-charged copolymer that creates a protective film on skin and hair surfaces, delivering smooth texture and enhanced sensory properties. This multifunctional ingredient serves as both a conditioning agent and opacity modifier in cleansing formulations. Its cationic nature allows it to bind effectively to negatively charged keratin proteins for improved tactile feel.

Summary

conditioning film forming opacifying

Science

Mechanism of Action

Functions through electrostatic attraction between its positive charge and negatively charged keratin in skin and hair. Forms a flexible, uniform film that reduces surface friction while providing a silky after-feel and contributing to product opacity through light scattering effects.

Research

Clinical Evidence

High confidence
Effective range 0.1–2%
Optimal

1%

Key findings

  1. 01 Enhanced hair combability and skin smoothness with improved aesthetic creaminess in cleansing systems
  2. 02 Effective cationic conditioning in rinse-off formulations with sustained fresh sensation and friction reduction

Transparency

Dusting Analysis

Not commonly dusted

Primarily used in rinse-off products where dusting is not a significant concern due to its conditioning and opacifying functions.

The Formula

Formulation

Solubility
Water
Optimal pH 4.5 – 8.5
0 7 14

Stability

Demonstrates excellent stability in surfactant-based systems and is typically supplied as liquid dispersion. Contributes to formulation viscosity while providing opacity.

Synergies

  • Mild surfactants
  • Cationic conditioning agents

Conflicts

  • High concentrations of anionic surfactants
  • Strong oxidizing agents

Safety

Safety Profile

CIR Status
Safe as used
Sensitization risk Low

Evaluated within the acrylates copolymer group by CIR Expert Panel. Large molecular structure limits skin penetration, contributing to its safety profile in cosmetic applications.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

A versatile conditioning polymer that effectively improves sensory properties across multiple product categories with excellent safety profile.

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