Hydrogenated Polyisobutane

What is Hydrogenated Polyisobutane?

Hydrogenated Polyisobutene is a synthetic hydrocarbon polymer produced by polymerizing isobutene monomers and then hydrogenating the resulting polyisobutene to saturate its bonds, creating a stable, viscous liquid. This colorless, odorless ingredient belongs to the polyolefin family and serves primarily as an emollient and skin-conditioning agent in cosmetics. It is commonly found in lip products, foundations, creams, and hair care formulations. In products, it functions by forming a lightweight, breathable film on the skin that enhances spreadability, improves product stability, and provides a silky, non-sticky texture. Its high molecular weight prevents penetration into the skin, keeping it on the surface to soften and smooth without clogging pores.

Comedogenic Rating 0/5 Low risk of clogging pores
EWG Safety Rating 1 View on EWG →

Benefits

Enhances product texture for easy application and smooth finish.

Provides a protective, non-greasy moisture barrier on skin.

Boosts shine and conditioning in lip and hair products.

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 with dry or rough skin seeking emollient effects.
Those with rare hydrocarbon sensitivities.
Users of makeup products desiring improved wear and comfort.
Individuals preferring fully natural ingredient profiles.
People preferring lightweight alternatives to heavier oils.
Users avoiding synthetic polymers entirely.

Safety Notes

  • Rated low hazard by safety assessors with minimal irritation risk.
  • Non-comedogenic, suitable for acne-prone skin based on evaluations.

Frequently Asked Questions about Hydrogenated Polyisobutane

What role does Hydrogenated Polyisobutane play in skincare?

It acts as an emollient to improve texture, spreadability, and provide a soft feel.

Is it safe for sensitive skin?

Yes, it shows low irritation potential in safety assessments.

Does it contribute to acne?

No, it has a comedogenic rating of zero.