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SODIUM ACRYLATES COPOLYMER.

Valuable CAS - / BINDING, FILM FORMING, OPACIFYING, VISCOSITY CONTROLLING

Sodium Acrylates Copolymer is a highly versatile polymer primarily utilized as a thickening agent and emulsion stabilizer. It significantly improves product texture and imparts a luxurious feel upon application. Additionally, it forms a protective film on the skin, contributing to enhanced hydration and the controlled release of active ingredients.

Summary

Viscosity Controlling Film Forming Stabilizing Agent Texture Enhancer Hydration Support

Science

Mechanism of Action

This ingredient functions by increasing the viscosity of formulations, thereby acting as a thickening agent to achieve the desired product consistency. On the skin, it establishes a fine, protective film that helps to mitigate transepidermal water loss, consequently boosting skin hydration. This film-forming capacity can also facilitate the regulated delivery of active components. Furthermore, it serves as a stabilizing agent in emulsions, preventing phase separation and ensuring product uniformity, while simultaneously enhancing texture for a silky skin feel.

Research

Clinical Evidence

High confidence
Effective range 0.5–25%
Optimal

N/A

Key findings

  1. 01 A 25% aqueous dilution of Acrylates Copolymer demonstrated no irritant or sensitizing effects in a human repeated insult patch test, indicating a favorable safety profile at higher concentrations.
  2. 02 Effective at concentrations as low as 0.5% for improving texture and stabilizing emulsions.
  3. 03 Utilized within a 0.5-5.0% range in diverse sun protection formulations, including SPF daily wear moisturizers and tinted sunscreens.

Transparency

Dusting Analysis

Not commonly dusted

No data available suggests this ingredient is commonly 'dusted' in formulations or requires excessively high concentrations for efficacy beyond its established functional roles.

The Formula

Formulation

Solubility
Water
Optimal pH N/A
0 7 14

Stability

Sodium Acrylates Copolymer exhibits exceptional adaptability, maintaining its stability and effectiveness across a wide pH spectrum, including acidic, neutral, and alkaline environments.

Conflicts

  • Compatibility with cationic raw materials must be carefully assessed due to its anionic nature, which may lead to interactions.
  • High concentrations of non-polar substances, such as paraffin waxes, have the potential to decrease its solubility within a formulation.

Safety

Safety Profile

CIR Status
Safe with restrictions
Max tested
25%
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel has concluded that acrylates copolymers, including Sodium Acrylates Copolymer, are safe for use in cosmetics when formulated to prevent irritation and when residual monomer levels are kept as low as possible. This assessment was reaffirmed in 2018. While generally considered non-irritating, individuals with highly sensitive skin might consider patch testing, though it is suitable for sensitive skin when used at lower concentrations. Data from SCCS and FDA regarding this specific ingredient are currently unavailable.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

Sodium Acrylates Copolymer is a valuable and adaptable ingredient that significantly improves product texture, enhances formulation stability, and supports skin hydration through its film-forming properties, with a low risk of irritation or comedogenicity.

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References

Sources