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HYDROXYETHYL ACRYLATE/SODIUM ACRYLOYLDIMETHYL TAURATE COPOLYMER.

Valuable CAS 111286-86-3 / EMULSION STABILISING, VISCOSITY CONTROLLING

This advanced synthetic polymer functions as a multi-tasking rheology modifier, meticulously thickening and stabilizing formulations to create luxurious, non-sticky textures. It expertly emulsifies oil-in-water systems, preventing separation even with high oil concentrations or challenging ingredients. On the skin, it contributes to a refined feel and supports barrier function.

Summary

viscosity controlling emulsion stabilising thickening gelling agent

Science

Mechanism of Action

Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer is engineered to optimize cosmetic formulations by acting as a powerful rheology modifier. It efficiently thickens and gels liquids, yielding supple, non-tacky textures. As a non-surfactant emulsifier, it plays a critical role in stabilizing oil-in-water emulsions, ensuring ingredient homogeneity and preventing phase separation. This copolymer also functions as a dispersing agent, promoting uniform distribution of components. When applied, it forms a lightweight, breathable film on the skin's surface, enhancing moisture retention, reinforcing the skin barrier, and offering protection against environmental stressors, resulting in a notably soft and smooth complexion.

Research

Clinical Evidence

High confidence
Effective range 0.3–3%
Optimal

0.5-1.5% for textural enhancement and stabilization in leave-on products.

Key findings

  1. 01 Recommended usage for general cosmetic formulations to thicken, gel, emulsify, and stabilize.
  2. 02 Typical concentration for achieving clear serum consistency.
  3. 03 Typical concentration for creating effective moisturizing gels.
  4. 04 Effective concentration for stabilizing emulsions and lotions.

Transparency

Dusting Analysis

Not commonly dusted

This ingredient functions primarily as a rheology modifier and stabilizer, not an active ingredient with a specific 'dusted' efficacy threshold. Its concentration is determined by desired texture, stability, and aesthetic properties of the final product, rather than a minimum effective dose for an active benefit.

The Formula

Formulation

Solubility
Water
Optimal pH 3 – 10
0 7 14

Stability

Exhibits robust stability across a wide pH range of 3 to 10, tolerating up to pH 12. It maintains integrity in the presence of electrolytes, salts (e.g., magnesium sulfate, sodium chloride), and up to 50% ethanol. This allows for its use in diverse formulations, including low-pH exfoliants. It effectively handles oil loads up to 20%, disperses readily in water to form clear, stable gels, and integrates efficiently without requiring heat.

Safety

Safety Profile

CIR Status
Safe as used
Max tested
3.6%
Sensitization risk Low

The independent Cosmetic Ingredient Review (CIR) Expert Panel has deemed this copolymer safe for use in cosmetics under current practices and concentrations, attributing its safety to its large molecular size which precludes skin penetration. The FDA also confirms its safety for cosmetic applications. While reported usage extends up to 3.6% in leave-on products (e.g., eyeliner), cosmetic manufacturers typically limit its concentration to below 3% in leave-on formulations based on safety assessment guidelines.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

This versatile polymer is a valuable asset in formulation science, enhancing product stability and texture across a broad range of cosmetic applications while offering mild skin benefits and excellent safety.

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