Acrylates/Steareth-20 Methacrylate Copolymer

What is Acrylates/Steareth-20 Methacrylate Copolymer?

Acrylates/Steareth-20 Methacrylate Copolymer is a synthetic polymer derived from acrylic acid esters and a methacrylate derivative of steareth-20, an ethoxylated fatty alcohol. Commonly found in lotions, creams, and gels, it belongs to the category of rheology modifiers in cosmetics. In formulations, it works by creating a three-dimensional network of entangled polymer chains when hydrated, which increases viscosity and prevents separation of oil and water phases. This enhances product consistency, suspends pigments or actives uniformly, and improves sensory attributes like spreadability and non-drip properties. Its film-forming capability also aids in light hold for certain applications, making it versatile across water-based and emulsion systems without altering skin feel significantly.

Comedogenic Rating 0/5 Low risk of clogging pores
EWG Safety Rating 2 View on EWG →

Roles in Formulation

This ingredient serves the following purposes in cosmetic formulations:

Viscosity controlling agent
Adjusts thickness to the desired level for stability and usability, improving dispensing, suspension, and texture across many formulation types.

Benefits

Enhances product thickness for better stability and even distribution of ingredients.

Improves texture and ease of application in creams and lotions.

Supports non-drip formulas, ideal for daily skincare routines.

Who It's For

A quick guide for who this ingredient may suit (and who should be cautious).

Who May Benefit Who Should Avoid
Individuals preferring lightweight, stable emulsions that apply smoothly.
Those with rare allergies to acrylate polymers.
People with oily or acne-prone skin seeking non-comedogenic thickeners.
People sensitive to ethoxylated ingredients.
Users of multi-phase products needing consistent performance over time.
Individuals preferring completely natural or polymer-free formulations.

Safety Notes

  • Considered low hazard in cosmetic concentrations by safety assessments.
  • Typically shows minimal irritation potential in standard use.

Frequently Asked Questions about Acrylates/Steareth-20 Methacrylate Copolymer

What does this ingredient do in skincare?

It controls viscosity, stabilizing formulas and improving texture for even application.

Is it safe for daily use?

Yes, it's regarded as low hazard and non-irritating in cosmetic products.

Does it cause acne?

No, it has a comedogenic rating of zero, making it suitable for acne-prone skin.