Styrene/Butadiene Copolymer ●
TL;DR. This ingredient is primarily used as a film-former, binder, and texture modifier, helping products form flexible, water-resistant films on skin, hair, lashes, or nails. It can also support opacity and wear in color cosmetics and styling products.
What does Styrene/Butadiene Copolymer do in a cosmetic formula?
This ingredient is primarily used as a film-former, binder, and texture modifier, helping products form flexible, water-resistant films on skin, hair, lashes, or nails. It can also support opacity and wear in color cosmetics and styling products.
Is Styrene/Butadiene Copolymer clean?
From a clean-beauty perspective, it has friction because it is a synthetic, non-biodegradable polymer and may raise residual monomer scrutiny depending on manufacturing controls. The finished polymer is generally low-irritation, but many stricter standards flag this class for persistence rather than routine skin tolerance.
Is Styrene/Butadiene Copolymer sustainable?
This material is petroleum-derived and is not readily biodegradable, so environmental persistence is the main concern. In rinse-off formats, small polymer particles or films can contribute to microplastic-related scrutiny.
Is Styrene/Butadiene Copolymer COSMOS-approved?
It is not permitted under COSMOS-natural or COSMOS-organic standards because it is a petrochemical synthetic polymer with poor biodegradability alignment. It fits Green Chemistry principles weakly, mainly due to fossil feedstocks and environmental persistence.
How does Styrene/Butadiene Copolymer work chemically?
The molecule is a high-molecular-weight elastomeric copolymer built from aromatic vinyl and conjugated diene units, usually supplied as an aqueous latex or dispersion for film formation. It is generally chemically stable in finished formulas, but dispersion stability can depend on pH, surfactant system, electrolytes, and shear during processing.
Last updated 2026-05-13