Butyl Acrylate/Hydroxypropyl Dimethicone Acrylate Copolymer

What is Butyl Acrylate/Hydroxypropyl Dimethicone Acrylate Copolymer?

Butyl Acrylate/Hydroxypropyl Dimethicone Acrylate Copolymer is a lab-synthesized polymer created through the copolymerization of butyl acrylate, a common acrylic monomer, and hydroxypropyl dimethicone acrylate, which incorporates silicone properties for added flexibility. This hybrid structure combines the adhesion of acrylates with the smooth, breathable feel of silicones. Primarily used in hair styling products like sprays and gels, as well as makeup such as foundations and sunscreens, it functions by depositing a thin, continuous sheath upon drying. This film improves product adherence, resists water and transfer, and provides a non-sticky hold without stiffness. In formulations, it enables longer wear times and better performance under humidity or activity, making it ideal for cosmetics requiring durability.

Comedogenic Rating 0/5 Low risk of clogging pores
EWG Safety Rating 1 View on EWG →

Roles in Formulation

This ingredient serves the following purposes in cosmetic formulations:

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.
Hair fixative
Provides style hold by forming a film on hair, helping maintain shape, reduce frizz, and improve durability in sprays, gels, and mousses.
Hair fixing
Improves style retention by depositing film-forming polymers that hold hair in place while balancing stiffness, flexibility, and humidity resistance.

Benefits

Enhances makeup and sunscreen longevity by forming a transfer-resistant barrier.

Delivers flexible style hold for hair, reducing frizz in humid conditions.

Creates a smooth, water-repellent layer that improves product performance without heaviness.

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 long-wear foundations or sunscreens for active lifestyles.
Those with rare sensitivities to acrylate polymers.
People styling hair who need humidity-resistant hold.
People avoiding synthetic film-formers in favor of natural alternatives.
Users preferring lightweight films over heavy waxes or gels.
Individuals experiencing scalp irritation from polymer-based hair products.

Safety Notes

  • Considered low hazard in cosmetic concentrations by safety assessments.
  • Non-comedogenic, unlikely to clog pores on skin or scalp.

Frequently Asked Questions about Butyl Acrylate/Hydroxypropyl Dimethicone Acrylate Copolymer

What does this copolymer do in products?

It forms a flexible film that boosts water resistance, wear time, and style hold on skin or hair.

Is it safe for daily use?

Safety reviews indicate low risk at typical cosmetic levels, suitable for most users.

Does it work on all hair types?

Offers balanced hold effective for various hair textures, especially in humid environments.