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HYDROXYETHYL/METHOXYETHYL ACRYLATE COPOLYMER.

Valuable / FILM FORMING

This versatile acrylate copolymer creates a breathable film on the skin, enhancing moisture retention and barrier integrity. Beyond its direct skin benefits, it significantly improves product formulation by acting as an effective emulsifier, stabilizer, and thickening agent.

Summary

Film forming Emulsifier Stabilizer Thickening agent Gelling agent Water resistance

Science

Mechanism of Action

On the skin, this ingredient forms a continuous, light, and breathable film that actively aids in retaining moisture, thereby bolstering the skin's natural barrier. This protective layer shields the skin from external aggressors, contributing to a soft and supple tactile experience. Within cosmetic formulations, it functions as a powerful emulsifier and stabilizer, adeptly blending oil and water phases. Additionally, its properties as a thickening and gelling agent result in smooth, non-sticky textures and can impart water resistance to the final product.

Research

Clinical Evidence

Medium confidence
Effective range 0.3–7%
Optimal

N/A

Key findings

  1. 01 The Cosmetic Ingredient Review (CIR) Expert Panel has assessed Hydroxyethyl Acrylate/Methoxyethyl Acrylate Copolymer, alongside 125 other acrylates copolymers, concluding its safety for use in cosmetics under current practices and concentrations when formulated to be non-irritating. While specific optimal efficacy concentrations for this exact polymer are not detailed, studies on similar polymers indicate effective usage ranges between 0.3% to 3% for emulsifying/thickening functions and 2% to 7% for film-forming and water-resistance properties.

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Water
Optimal pH 3 – 12
0 7 14

Stability

This polymer demonstrates excellent stability and functionality across a very broad pH spectrum, from 3.0 to 12.0, making it suitable for a wide array of formulations, including those with low pH. It is compatible with various substances such as isohexadecane, polysorbates, and silicones. For optimal incorporation, it should be slowly sifted into the solution with consistent agitation, and typically mixed for approximately 30 minutes after combining and heating oil phase ingredients to 80°C (176°F), or effectively dispersed in glycerin, propylene glycol, alcohol, or neutralized hot water.

Synergies

  • Isohexadecane
  • Polysorbates
  • Silicones
  • Glycerin
  • Propylene glycol
  • Alcohol

Conflicts

  • Cationic ingredients (compatibility should be carefully evaluated)

Safety

Safety Profile

CIR Status
Safe as used
Sensitization risk Low

The CIR Expert Panel has concluded that Hydroxyethyl Acrylate/Methoxyethyl Acrylate Copolymer is safe for use in cosmetics, provided formulations ensure it is non-irritating. Its use is overseen by regulatory bodies in Europe and the US FDA. For related acrylamide/acrylate copolymers, specific restrictions apply to residual acrylamide content: not exceeding 0.1 mg/kg in leave-on body care products and 0.5 mg/kg in other cosmetic products.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

HYDROXYETHYL/METHOXYETHYL ACRYLATE COPOLYMER is a valuable ingredient, effectively forming a breathable, protective film on the skin while significantly enhancing formulation texture and stability, deemed safe for all skin types.

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