Covestro’s Baycusan eco E 1001 (INCI: Polyurethane-93) is a naturally derived polymer that acts as a film former and is suitable for water-based products; especially color cosmetics.
According to the company, synthetic film formers are typically crucial for lasting cosmetic formulas. Baycusan eco E 1001 was developed as a partially bio-based alternative and imparts wear resistance for cosmetics that lasts all day.
The chemistry of the liquid polymer reportedly allows for the introduction of high amounts of renewable materials into polymers without losing the key benefits of synthetics; e.g., water resistance, rub-off resistance and anti-smudge effects. With natural content above 50%, the active also fulfills the bio-based content criteria of a naturally derived ingredient, per ISO 16128.