Sodium Acrylates Copolymer

What is Sodium Acrylates Copolymer?

Sodium Acrylates Copolymer is a synthetic, high-molecular-weight polymer produced by copolymerizing acrylic acid with sodium acrylate, typically cross-linked for durability. Widely used in skincare, makeup, and hair products, it functions as a multifunctional additive. In water-based formulas, it hydrates and expands to control thickness, ensuring even distribution of active ingredients and preventing settling. As a film-former, it creates a sheer, flexible barrier on skin or hair, enhancing moisture retention and resistance to water or rubbing. Its binding action strengthens product structure, aiding cohesion in solids like powders or bars. Additionally, it scatters light to impart opacity, giving clear liquids a smooth, uniform look. Stable in various pH levels, it integrates seamlessly without altering other components, making it ideal for everyday personal care items.

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

Roles in Formulation

This ingredient serves the following purposes in cosmetic formulations:

Binder
Helps hold solid ingredients together to form cohesive tablets, compacts, or sticks, improving pressability, integrity, and wear of the finished product.
Film former
Creates a continuous film on skin or hair to improve wear, water resistance, transfer resistance, shine, or hold in sunscreens, makeup, and styling products.
Viscosity controlling agent
Adjusts thickness to the desired level for stability and usability, improving dispensing, suspension, and texture across many formulation types.
Binding
Provides cohesion by helping ingredients stick together, improving the strength and integrity of pressed powders, tablets, or solid bars.
Opacifying agent
Makes a formula less transparent to create a creamy, opaque look; can also help visually mask suspended particles and improve aesthetic uniformity.

Benefits

Provides smooth, stable textures for better product spreadability

Creates protective films that improve wear and water resistance

Suspends particles evenly to maintain formula consistency

Who It's For

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

Who May Benefit Who Should Avoid
Users of lotions or serums seeking non-drippy consistency
Those with rare sensitivities to acrylic-based polymers
Makeup enthusiasts wanting longer-lasting application
People avoiding synthetic thickeners entirely
Individuals preferring lightweight, non-greasy formulations
Users who prefer minimalist, polymer-free routines

Safety Notes

  • Safety assessments confirm suitability for cosmetic applications
  • Displays low comedogenic potential, unlikely to block pores

Frequently Asked Questions about Sodium Acrylates Copolymer

Is Sodium Acrylates Copolymer safe for daily use?

Cosmetic safety panels deem it appropriate for use in rinse-off and leave-on products at standard levels.

Does it clog pores?

It carries a comedogenic rating of 0, indicating low risk of pore blockage.

What makes it effective in products?

It swells in water to thicken, bind ingredients, and form flexible films for enhanced performance.