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ingredient guide

What Is Polyurethane-35? A Binder for Pressed Cosmetics, Listed in FiberExtend Mascara

Polyurethane-35 has a binding class for pressed cosmetic cakes and tablets.

updated 2026-09-23 · ingredient guide

why it is here

what it does for you

FiberExtend Mascara also lists it beside rayon fibers and waxes. The binding class describes compressed formulas, while the mascara’s rayon fibers build visible length and fullness on lashes. See how rayon works in FiberExtend.

Ingredient details1 detail

What Is Polyurethane-35? A Binder for Pressed Cosmetics, Listed in FiberExtend Mascara

Polyurethane-35 has a cosmetic binding class for adhesion in pressed or compressed cakes and tablets. FiberExtend Mascara lists it alongside rayon fibers and waxes.