Oxidized Polyethylene

What is Oxidized Polyethylene?

Oxidized polyethylene is a synthetic polymer derived from polyethylene, a long-chain hydrocarbon, through a controlled oxidation process that incorporates oxygen groups like carboxylates. This modification transforms the inert plastic into a polar, waxy material ideal for cosmetic applications. Commonly used in anhydrous formulations such as lip balms, mascaras, and hair care products, it serves as a viscosity controller by increasing thickness in oil-based systems, preventing ingredient separation, and improving spreadability. Its film-forming properties create a smooth, protective layer on skin or hair, while also acting as a binder, bulking agent, and slip modifier for luxurious sensory feel. Derived industrially, it ensures consistency across product types, supporting emulsion stability and opacity without altering core active performance.

Comedogenic Rating 0/5 Low risk of clogging pores
EWG Safety Rating 3 View on EWG →

Roles in Formulation

This ingredient serves the following purposes in cosmetic formulations:

Viscosity controlling agent
Adjusts thickness to the desired level for stability and usability, improving dispensing, suspension, and texture across many formulation types.

Benefits

Provides stable thickness to oil-based formulas, aiding even distribution and suspension of ingredients.

Creates a smooth, non-sticky texture for comfortable application on skin and hair.

Supports non-comedogenic properties, minimizing pore-clogging concerns in formulations.

Who It's For

A quick guide for who this ingredient may suit (and who should be cautious).

Who May Benefit Who Should Avoid
Individuals using thick creams or balms who value product stability and easy dispensing.
Those with rare sensitivities to synthetic polymers.
People with acne-prone skin preferring low-comedogenic thickeners.
People preferring entirely natural or plant-based ingredients.
Users of makeup or hair products seeking smooth glide and film protection.
Individuals avoiding petroleum-derived materials in cosmetics.

Safety Notes

  • Regulatory reviews deem it safe for use in cosmetics at typical concentrations.
  • Low irritation potential observed in formulation testing by cosmetic safety panels.

Frequently Asked Questions about Oxidized Polyethylene

What is oxidized polyethylene used for in skincare?

It controls viscosity in oil-based products, stabilizes formulas, and improves texture for better application.

Is oxidized polyethylene comedogenic?

It has a comedogenic rating of 0, making it unlikely to clog pores.

Is it safe for daily use?

Cosmetic safety assessments confirm its safety in typical product concentrations.