Cleansing Agent

Pei-14 PEG-24/PPG-16 Copolymer

INCI: PEI-14 PEG-24/PPG-16 COPOLYMER

Reviewed by Rosie · Last updated 18 Aug 2026

A synthetic polymer that reduces clumping and improves powder texture in formulations

Best For Skin Types

All

Usage Frequency

As directed (formulation-dependent)

What Is Pei-14 PEG-24/PPG-16 Copolymer?

PEI-14 PEG-24/PPG-16 Copolymer is a synthetic polymer—a long-chain molecule engineered from polyethylene and polypropylene units. It is primarily used as an anticaking agent in powder-based skincare products, where it prevents ingredients from clumping together and helps maintain a smooth, free-flowing texture.

This ingredient is not intended to deliver active skin benefits on its own, but rather to improve the sensory and functional qualities of a formulation. It allows powders, pressed products, and granular formulations to remain stable and easy to apply over time.

How It Works

Anticaking polymers like this copolymer work by coating the surfaces of powder particles, reducing friction and preventing them from adhering to one another. This mechanical action keeps the powder loose and pourable, even in humid conditions or with repeated use.

Because it is a film-forming agent, it also creates a thin, protective layer that can help stabilise the overall formulation structure. It does not penetrate the skin or act on skin biochemistry; its role is purely structural and cosmetic.

Clinical Evidence & References

Published clinical studies specifically investigating PEI-14 PEG-24/PPG-16 Copolymer in skincare are limited. The ingredient's safety and efficacy as an anticaking agent are well-established in cosmetic science based on decades of industrial use and regulatory approval across multiple territories.

Its function is cosmetic rather than therapeutic, meaning the primary evidence comes from stability testing and user tolerability data rather than clinical trials. It is widely used in cosmetic formulations without significant adverse reports.

How to Use

This ingredient will not have a noticeable effect on your skin when used alone. It works behind the scenes in powder formulations—pressed eyeshadows, setting powders, mineral foundations, and loose powders. Simply apply the product as directed; the anticaking benefit is already engineered into the formulation and requires no special application technique.

Safety & Precautions

PEI-14 PEG-24/PPG-16 Copolymer is generally well-tolerated and approved for use in cosmetics. It is unlikely to cause irritation in typical concentrations, though those with sensitivities to synthetic polymers should patch-test first.

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