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HOW WE DETERMINE SCORES Learn more About EWG VERIFIED®

Data: Fair

Isostearic Acid

IMAGE SOURCE: PubChem

SEARCH PRODUCTS

Other Concerns

Endocrine disruption (low) and Irritation (skin, eyes, or lungs) (low)

SYNONYMS

● CAS-30399-84-9
● C20356
● MFCD00044082
● J-016709
● NCGC00164392-02
● NCGC00164392-01
● ISOSTEARIC ACID, >=97% (CAPILLARY GC)
● AS-57253
● W-109211
● NCGC00255115-01

Restricted

Restricted: EWG VERIFIED products cannot contain this ingredient without adequate substantiation

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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hair treatment/serum15 products
anti-aging1 products
facial moisturizer/treatment21 products
facial cleanser7 products
makeup remover3 products
body oil2 products
serums & essences17 products
mascara26 products
foundation286 products
conditioner4 products
hair spray1 products
makeup primer8 products
lip balm30 products
daily use with SPF215 products
lip gloss65 products
brow liner39 products
BB cream41 products
lipstick231 products
hair color and bleaching37 products
bronzer/highlighter61 products
fragrance for men1 products
concealer283 products
eye liner24 products
recreational sunscreen64 products
moisturizer6 products
around-eye cream4 products
blush41 products
baby sunscreen7 products
lip plumper5 products
diaper cream1 products
lip liner19 products
eye shadow42 products
damaged skin treatment1 products
lip balm with SPF17 products
body firming lotion2 products
CC cream9 products
shampoo3 products
hair styling aid4 products
Under Eye Concealers2 products
other eye makeup1 products
Facial Sun Care3 products
shaving cream3 products
after shave1 products
after sun product1 products
facial powder5 products
setting powder/spray1 products
mask1 products

Enhanced skin absorption

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CONCERN REFERENCE
Penetration enhancerStructure/effect studies of fatty acid isomers as skin penetration enhancers and skin irritants(1989-03-01)

Data gaps

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CONCERN REFERENCE
Risk assessment method deficiencies and data gaps - Maximum reported 'as used' concentration is basis of safety assessment by industry safety panel (Cosmetic Ingredient Review, CIR) - implicit safe concentration limit in productCosmetic Ingredient Review (CIR)
Missing safety data noted by cosmetic industry reviewCosmetic Ingredient Review (CIR)

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)

Allergies/immunotoxicity

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CONCERN REFERENCE
immune system or allergies - weight of evidence unknown/unassessedCosmetic Ingredient Review (CIR)

Irritation (skin, eyes, or lungs)

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CONCERN REFERENCE
skin/eye/lung irritation - weight of evidence unknown/unassessedCosmetic Ingredient Review (CIR)

Organ system toxicity (non-reproductive)

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CONCERN REFERENCE
Classified as not expected to be potentially toxic or harmfulEnvironment Canada

Persistence and bioaccumulation

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CONCERN REFERENCE
Not suspected to be persistentEnvironment Canada
Not suspected to be bioaccumulativeEnvironment Canada

Ecotoxicology

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CONCERN REFERENCE
Suspected to be an environmental toxinEnvironment Canada

Endocrine disruption

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CONCERN REFERENCE
One or more studies show weak endocrine disruptionNational Toxicology Program (NTP)
  • Structure/effect studies of fatty acid isomers as skin penetration enhancers and skin irritants(1989-03-01)
  • Cosmetic Ingredient Review (CIR)
  • Environment Canada
  • National Toxicology Program (NTP)

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.

Can’t find your product?

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