POLYURETHANE-33 ●
TL;DR. This ingredient is primarily a film-former used to create flexible, water-resistant films in color cosmetics, sunscreens, hair styling, and long-wear skin products. It helps improve adhesion, wear time, transfer resistance, and texture.
What does POLYURETHANE-33 do in a cosmetic formula?
This ingredient is primarily a film-former used to create flexible, water-resistant films in color cosmetics, sunscreens, hair styling, and long-wear skin products. It helps improve adhesion, wear time, transfer resistance, and texture.
Is POLYURETHANE-33 clean?
This ingredient is a synthetic film-forming polymer, so many clean frameworks flag it for plastic-polymer persistence rather than skin irritation. It is generally low-sensitizing in finished formulas, with scrutiny centered on residual monomers, processing aids, and non-biodegradability.
Is POLYURETHANE-33 sustainable?
This material is typically petroleum-derived and not readily biodegradable, so it can add persistent polymer load after rinse-off use. Water-based dispersions may reduce solvent use, but end-of-life is the main environmental caveat.
Is POLYURETHANE-33 COSMOS-approved?
This ingredient is not aligned with COSMOS-natural or COSMOS-organic standards because it is a synthetic film-forming polymer outside the standard’s permitted material set. From a Green Chemistry view, its main limitations are fossil feedstock dependence and poor biodegradability, even when supplied in lower-solvent aqueous systems.
How does POLYURETHANE-33 work chemically?
The molecule is a high-molecular-weight synthetic polymer built around urethane linkages, designed to dry down into a cohesive, flexible film. It is commonly supplied as an aqueous dispersion and is most useful in formulas where pH, electrolytes, and co-solvents are balanced to preserve dispersion stability and film quality.
Last updated 2026-05-16