Acrylates/Steareth-20 Itaconate Copolymer

What is Acrylates/Steareth-20 Itaconate Copolymer?

Acrylates/Steareth-20 Itaconate Copolymer is a synthetic polymer created through the copolymerization of acrylic monomers, steareth-20 (a polyethylene glycol ether of stearyl alcohol), and itaconic acid derivatives. This results in a versatile, water-soluble ingredient commonly used in hair care products like shampoos and conditioners, as well as skin care formulations such as lotions and creams. In cosmetics, it functions primarily by increasing viscosity, which helps create a desirable thickness that enhances product stability, prevents ingredient separation, and improves sensory qualities like spreadability and suspension of particles. It also contributes to film-forming properties, allowing for a smooth, protective layer on hair or skin surfaces during use, aiding in better product performance without residue buildup.

Comedogenic Rating 0/5 Low risk of clogging pores
EWG Safety Rating 3 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 consistent texture and easier application.

Supports emulsion stability to keep formulas uniform over time.

Improves suspension of active ingredients for even distribution.

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 seeking stable, easy-to-use hair styling products.
Those sensitive to acrylate-based polymers.
Users of lotions preferring smooth, non-dripping textures.
Individuals with known allergies to polyethylene glycol derivatives.
People with formulas needing better particle suspension.
Users preferring entirely natural or polymer-free formulations.

Safety Notes

  • Rated with moderate concern by some databases due to limited data on long-term use.
  • Typically low comedogenic potential, suitable for most skin types.

Frequently Asked Questions about Acrylates/Steareth-20 Itaconate Copolymer

What does this ingredient do in cosmetics?

It controls viscosity to thicken products, stabilize emulsions, and improve texture for better usability.

Is it safe for daily use?

Generally regarded as safe in cosmetic concentrations, with low irritation potential from reviews.

Does it work in hair products?

Yes, commonly used in shampoos and conditioners to enhance thickness and film-forming effects.