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ACRYLATES/STEARETH-30 METHACRYLATE COPOLYMER.

Valuable CAS 75760-37-1 / VISCOSITY CONTROLLING

This polymer functions as an associative thickener and rheology modifier, precisely controlling viscosity and stabilizing emulsions in various skincare formulations.

viscosity controlling emulsion stabilising

Science

Operating as an Alkali-Swellable Emulsion (ASE) and associative thickener, it uncoils and swells upon neutralization, forming a 3D network with hydrophobic components to increase viscosity and stabilize emulsions.


Research

High confidence
Effective range 0.75–25%
Optimal

0.75%

Key findings

  1. 01 Indicated as a typical effective concentration for thickening and rheology modification in skincare and haircare formulations.
  2. 02 Suggested active levels for sun protection products to enhance water resistance and SPF retention.

Transparency

Not commonly dusted

The Formula

Solubility
Water
Optimal pH 7.5 – 12.5
0 7 14

Stability

Supplied as a low-viscosity aqueous emulsion, it requires neutralization with a base (pH 7.5-12.5) to activate thickening. Viscosity significantly decreases below pH 7.0.

Conflicts

  • Low pH environments (< 7.0)
  • High concentrations of electrolytes/salts
  • Cationic ingredients

Safety

CIR Status
Safe as used
Max tested
25%
Sensitization risk Low

The CIR Expert Panel confirmed safety up to 25% in leave-on skincare, provided formulations are non-irritating.


Your Skin

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

Our Assessment

Valuable

A valuable ingredient for precisely controlling texture and enhancing stability, particularly in water-resistant formulations, with proven low irritation and comedogenicity.


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