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HOW WE DETERMINE SCORES Learn more About EWG VERIFIED®

Data: Limited

Polyisobutene

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Other Concerns

Non-reproductive organ system toxicity (low_moderate) and Irritation (skin, eyes, or lungs) (low)

SYNONYMS

● 1-PROPENE,-2-METHYL-, HOMOPOLYMER
● PERMETHYL 108A
● ISOBUTYLENE HOMOPOLYMER
● ISOBUTENE HOMOPOLYMER
● HOMOPOLYMER 1-PROPENE,-2-METHYL-
● HOMOPOLYMER 2-METHYL-1-PROPENE
● 1-PROPENE, 2-METHYL-, HOMOPOLYMER; 1-PROPENE, 2-METHYL-, HOMOPOLYMER(C4H8)X, X = 17; 1-PROPENE, 2-METHYL-, HOMOPOLYMER(C4H8)X, X = 17
● POLY ISOBUTYLENE
● 2-METHYL-1-PROPENE, HOMOPOLYMER
● POLYISOBUTYLENE

This ingredient is not currently on EWG's Skin Deep Restricted or Unacceptable Lists.

Polyisobutene is a synthetic polymer of isobutylene; used as a film-forming agent.

Common concerns

See how this product scores for common concerns.

  • LOW
    Cancer
  • LOW
    Allergies & Immunotoxicity
  • LOW
    Developmental and Reproductive Toxicity
  • LOW
    Use Restrictions

Ingredient concerns

  • CONCERNS
  • DATA SOURCES

Products with this Ingredient

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brow liner81 products
lip gloss449 products
anti-aging11 products
facial moisturizer/treatment83 products
moisturizer54 products
foot moisturizer7 products
shaving cream (men's)7 products
lipstick370 products
concealer134 products
blush51 products
eye shadow204 products
mascara49 products
shaving cream5 products
eye liner150 products
foundation61 products
hair treatment/serum10 products
lip balm282 products
hair styling aid29 products
mask74 products
lip plumper73 products
around-eye cream26 products
hand cream11 products
Moisturizing Socks1 products
lip liner37 products
facial powder8 products
serums & essences40 products
bronzer/highlighter85 products
beard care5 products
Beard Conditioners2 products
makeup primer12 products
other eye makeup1 products
eyelash glue1 products
body wash/cleanser1 products
daily use with SPF38 products
eye makeup remover1 products
body firming lotion9 products
glitter8 products
baby lotion2 products
foot cleansing2 products
facial cleanser5 products
toners/astringents1 products
foot odor control1 products
shampoo1 products
hair spray3 products
exfoliant/scrub6 products
hair color and bleaching1 products
styling gel/lotion5 products
recreational sunscreen9 products
antiperspirant/deodorant3 products
bar soap1 products
makeup remover1 products
Oils & Serums2 products
after shave3 products
Facial Sun Care4 products
sunless tanning3 products
body oil1 products
hair removal waxes2 products
pore strips1 products
Lip Stain10 products
bath oil/salts/soak1 products
body art1 products
lip balm with SPF3 products
cuticle treatment2 products
damaged skin treatment1 products
Under Eye Concealers1 products
Eye Shadow Primers1 products
fragrance for women2 products
BB cream1 products

Multiple, additive exposure sources

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CONCERN REFERENCE
Designated as safe for general or specific, limited use in foodUS. Food and Drug Administration (FDA)

Informational

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CONCERN REFERENCE
Industry or government recommendations for safe use: restrictions on concentration, impurities, product types, or manufacturing methods - anyCosmetic Ingredient Review (CIR)

Organ system toxicity (non-reproductive)

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CONCERN REFERENCE
Classified as expected to be toxic or harmfulEnvironment Canada
Classified as medium human health priorityEnvironment Canada
Classified as potentially toxic or harmfulEuropean Chemicals Agency (ECHA)

Persistence and bioaccumulation

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CONCERN REFERENCE
Not suspected to be bioaccumulativeEnvironment Canada

Ecotoxicology

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CONCERN REFERENCE
Not suspected to be an environmental toxinEnvironment Canada
Wildlife and environmental toxicityEuropean Chemicals Agency (ECHA)

Irritation (skin, eyes, or lungs)

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CONCERN REFERENCE
Limited evidence of irritationEuropean Chemicals Agency (ECHA)
  • US. Food and Drug Administration (FDA)
  • Cosmetic Ingredient Review (CIR)
  • Environment Canada
  • European Chemicals Agency (ECHA)

Understanding scores

Cosmetics and personal care products are not required to be tested for safety before being allowed on the market. The Skin Deep® scoring system was designed to help the public understand whether a product is safe to use or whether it contains ingredients of concern.

Every product and ingredient in Skin Deep gets a two-part score – one for hazard and one for data availability. The safest products score well by both measures, with a low hazard rating and a fair or better data availability rating.


HOW WE DETERMINE SCORES

Hazard score

The Skin Deep ingredient hazard score, from 1 to 10, reflects known and suspected hazards linked to the ingredients. The EWG Verified® mark means a product meets EWG’s strictest criteria for transparency and health.

Score legend
WEIGHT-OF-EVIDENCE APPROACH

A product’s hazard score is not an average of the ingredients’ hazard scores. It is calculated using a weight-of-evidence approach that factors in all of the hazards or health impacts associated with the ingredients.

Data availability

The Skin Deep data availability rating reflects the number of scientific studies about the product or ingredient in the published scientific literature.

NONE LIMITED FAIR GOOD ROBUST
Low Availability
Moderate Availability
High Availability
NONE

Ingredients have not been assessed.

LIMITED-FAIR

There is only a modest volume of research.

GOOD-ROBUST

Ingredients have been studied extensively.

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