Polyisobutene

Polyisobutene molecular structure

adults • Skin contact product

Check for Different Age (6 available)

Is this safe for adults to use Polyisobutene?

✅
YES - Generally Safe
Danger Score: 1 (Lower is safer)
Quick Answer: Polyisobutene is generally considered safe for adults when used in topical products. Adults generally have higher tolerance.

ℹ️General Overview

For adults: Generally safe when used on normal skin. Low chance of causing cancer, allergy, or harm to reproduction. A few government reviews note possible effects on organs and a small risk of irritation, but overall the risk for adult topical use is low.

✅What to Do

If you’re an adult using a product with this ingredient: do a small patch test (apply a little to the inside of your forearm and wait 24 hours). Don’t put it on broken or inflamed skin. Stop use and rinse if you get redness, itching, stinging, eye irritation, or breathing discomfort. Choose products from reputable brands and follow label directions. If you have a serious health condition or are unsure, ask your doctor.

⚠️Warnings

Watch for skin redness, swelling, itching, burning, eye watering, or breathing irritation — these are the main things to stop for. These cautions come from government chemical reviews (Environment Canada and the European Chemicals Agency) that noted possible organ-system effects and limited irritation evidence. The U.S. Food and Drug Administration has also evaluated it for limited food uses, and industry reviewers recommend controls on manufacturing and impurities. If irritation occurs, stop use and seek medical advice if it’s severe.

Confidence: HIGH

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Safety Risk Labels

This ingredient has the following documented risks:

Organ Risk: Canada's chemical review flagged polyisobutene as expected to be toxic or harmful to non-reproductive body systems and gave it a medium human-health priority. A European chemical agency also lists it as potentially toxic or harmful. This means there is real concern that repeated or high exposures could harm organs (for example liver, kidneys, or lungs).
Environmental: A European chemical regulator reported concerns about wildlife and environmental toxicity for this ingredient. That indicates it may pose a risk to animals or ecosystems if released into the environment.

Tap or hover over labels to see detailed risk information.

Alternative Names for Polyisobutene

This ingredient may also be listed as:

polyisobutene1-PROPENE,-2-METHYL-, HOMOPOLYMERPERMETHYL 108AISOBUTYLENE HOMOPOLYMERISOBUTENE HOMOPOLYMERHOMOPOLYMER 1-PROPENE,-2-METHYL-HOMOPOLYMER 2-METHYL-1-PROPENE1-PROPENE, 2-METHYL-, HOMOPOLYMER; 1-PROPENE, 2-METHYL-, HOMOPOLYMER(C4H8)X, X = 17; 1-PROPENE, 2-METHYL-, HOMOPOLYMER(C4H8)X, X = 17POLY ISOBUTYLENE2-METHYL-1-PROPENE, HOMOPOLYMERPOLYISOBUTYLENE

Always check ingredient labels carefully, as ingredients may be listed under different names.

Common Questions About Polyisobutene

Is this safe for adults to use Polyisobutene?

Yes, Polyisobutene is generally considered safe for adults based on current research.

What are the organ risk risks of Polyisobutene for adults?

May harm organs like liver, kidneys, or lungs with repeated use.

What are the environmental risks of Polyisobutene for adults?

Possible negative effects on the environment

What products contain Polyisobutene?

Polyisobutene is commonly found in skincare products, cosmetics, and topical applications. Always check ingredient labels before use.

When can adults using products with Polyisobutene?

The appropriate age depends on the specific ingredient properties and concentration. This analysis is for adults. Use the age selector above to check other ages.

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