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CETEARETH-20 METHACRYLATE.

Valuable / NOT REPORTED

A high-performance rheology modifier and film-forming polymer designed to enhance the structural integrity and sensory profile of skincare emulsions. It provides precise control over product flow while establishing a breathable protective shield on the skin surface.

viscosity controlling emulsion stabilising film forming rheology modifier

Science

Classified as an alkali-swellable emulsion (ASE) polymer, it undergoes a structural expansion upon neutralization with a base, creating a sophisticated thickening network. On the skin, it forms a cohesive, water-resistant film that reduces transepidermal water loss and improves the longevity of accompanying active ingredients.


Research

High confidence
Effective range 0.1–5%
Optimal

2.5%

Key findings

  1. 01 Demonstrated multifunctional capabilities as a fixative and rheology modifier, providing shear-thinning properties that improve application spreadability and emulsion stability.

Transparency

Not commonly dusted
Min. effective
0.5%
Red flag below
0.1%

As a functional texture enhancer rather than a primary active, use levels below 0.1% typically indicate a failure to provide meaningful structural benefits to the formulation.


The Formula

Solubility
Water
Optimal pH 5.5 – 12
0 7 14

Stability

Requires the addition of a neutralizing agent (such as NaOH or TEA) to activate its thickening properties and achieve maximum clarity.

Synergies

  • Surfactants
  • UV filters
  • Alkaline actives

Conflicts

  • High electrolyte concentrations
  • Strongly cationic ingredients
  • Low pH environments (<5.5)

Safety

CIR Status
Safe as used
Max tested
5%
Pregnancy
Safe
Sensitization risk Low

Part of the wider Acrylates Copolymers group; it is non-toxic and non-irritating when formulated correctly within the evaluated safety parameters.


Your Skin

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

Our Assessment

Valuable

An essential architectural component for creating stable, water-resistant formulas with a refined skin feel.


Related

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References