Get a Free 5ml Mini Now Free 5ml Mini With Every Order of The Mantle
Moumoujus

ISOBUTYLENE/SODIUM MALEATE COPOLYMER.

Questionable CAS 55031-88-4 / FILM FORMING, VISCOSITY CONTROLLING

ISOBUTYLENE/SODIUM MALEATE COPOLYMER is a synthetic polymer primarily utilized in skincare and cosmetics for its film-forming and viscosity-controlling properties. It creates a continuous, protective film on the skin while also adjusting the texture and flow of product formulations.

Summary

film-forming viscosity controlling opacifying agent skin-conditioning agent

Science

Mechanism of Action

This copolymer functions by depositing a continuous film on the skin's surface, which can provide barrier support or enhance product adherence. Additionally, it acts as a rheology modifier, precisely adjusting the viscosity of cosmetic formulations. Related copolymers, such as isobutylene-maleic anhydride (IBMA), demonstrate excellent dispersibility and gelling effects on micro-nano particles, primarily through electrostatic repulsion and steric hindrance in alkaline environments.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Water
Optimal pH N/A
0 7 14

Stability

The related isobutylene-maleic anhydride (IBMA) copolymer is soluble in alkaline solutions. For optimal stability, containers should be kept tightly closed in a dry, cool, and well-ventilated environment, protected from freezing temperatures.

Safety

Safety Profile

CIR Status
Safe with restrictions
Sensitization risk Moderate

The Cosmetic Ingredient Review (CIR) Expert Panel has broadly deemed families of acrylates copolymers, including this ingredient, safe for cosmetic use when precisely formulated to be non-irritating. However, the Safety Data Sheet (SDS) for ISOBUTYLENE/SODIUM MALEATE COPOLYMER classifies it as an 'Eye Irrit. 2 (H319)', indicating a potential for serious eye irritation. Direct contact with skin, eyes, or clothing should be avoided during handling.

Your Skin

Skin Compatibility

No Normal
No Dry
No Oily
No Sensitive
Irritancy Unknown
Comedogenicity Unknown

Our Assessment

Verdict

Questionable

While offering valuable film-forming and viscosity-controlling properties, the documented potential for serious eye irritation necessitates careful formulation and handling, making its general use in precision skincare questionable without specific concentration guidelines.

Related

Similar Ingredients

Finding similar ingredients…