What it is
This ingredient is a copolymer formed from capryloyl glycerin and sebacic acid units. On skin it forms a cohesive film that can help bind a formulation together and improve how it wears and feels. In mineral sunscreens it is often used to support even, lasting distribution of the product and to enhance the sensory finish.
Safety & warnings
As a polymeric ingredient it is generally well tolerated, non-irritating, and not appreciably absorbed, and it is not commonly associated with allergenicity or comedogenicity.
Origin & sourcing
Synthetic; a polyester copolymer produced by reacting glycerin- and sebacic-acid-derived building blocks.
Questions everyone asks
What does this copolymer do in mineral sunscreen?
It forms a binding film that helps the product distribute evenly and wear well on the skin.
Is it natural or synthetic?
It is a synthetic copolymer made from glycerin- and sebacic-acid-derived units.