INCI name

POLYESTER-4

Polyester-4

A synthetic polyester used as a film-forming and skin-conditioning ingredient.

What it is

Polyester-4 is a copolymer formed by condensation of adipic acid and pentaerythritol, end-capped with caproic, heptanoic, caprylic and capric acids. CosIng lists it as a film-forming and skin-conditioning ingredient.

Where it is used

Found in lipsticks, lip glosses, foundations and other makeup products.

Limits of interpretation

The INCI list shows which ingredients are present, not how much of each. Above 1%, ingredients are listed in descending order of weight; below 1% the order is free.

The INCI name does not show the molecular weight or the exact ratio of the acids used.

Functions

Film forming
Producing (upon application) a continuous film on the skin, hair or nails.
Skin conditioning
Maintaining the skin in good condition.

EU regulation

This ingredient is not listed in the annexes of Regulation (EC) No 1223/2009 in the CosIng data.

Products with this ingredient (12)

Check a full ingredient list