SYNONYMS16-METHYL- HEPTADECANOIC ACID, 16-METHYLHEPTADECANOIC ACID, HEPTADECANOIC ACID, 16-METHYL-, and ISOSTEARIC ACID
This ingredient is not currently on EWG's Restricted or Unacceptable Lists.
Isostearic Acid is a mixture of branched chain 18 carbon aliphatic acids.
See how this product scores for common concerns.
LOWAllergies & Immunotoxicity
LOWDevelopmental and Reproductive Toxicity
- DATA SOURCES
Products with this Ingredient
|daily use with SPF||60 products|
|recreational sunscreen||22 products|
|BB cream||8 products|
|hair color and bleaching||4 products|
|baby sunscreen||3 products|
|hair treatment/serum||2 products|
|makeup primer||1 products|
|lip balm with SPF||1 products|
|around-eye cream||1 products|
|lip gloss||1 products|
|Suspected to be an environmental toxin||Environment Canada Domestic Substance List|
|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 product||Cosmetic Ingredient Review Assessments|
|Missing safety data noted by cosmetic industry review||Cosmetic Ingredient Review Assessments|
|19 studies in PubMed science library may include information on the toxicity of this chemical||NLM PubMed|
Organ system toxicity (non-reproductive)
|Classified as not expected to be potentially toxic or harmful||Environment Canada Domestic Substance List|
Persistence and bioaccumulation
|Not suspected to be persistent||Environment Canada Domestic Substance List|
|Not suspected to be bioaccumulative||Environment Canada Domestic Substance List|
|Industry or government recommendations for safe use: restrictions on concentration, impurities, product types, or manufacturing methods - any||Cosmetic Ingredient Review Assessments|
- EC (Environment Canada). 2008. Domestic Substances List Categorization. Canadian Environmental Protection Act (CEPA) Environmental Registry.
- CIR (Cosmetic Ingredient Review). 2006. CIR Compendium, containing abstracts, discussions, and conclusions of CIR cosmetic ingredient safety assessments. Washington DC.
- NLM (National Library of Medicine). 2012. PubMed online scientific bibliography data. http://www.pubmed.gov.
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
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.
The Skin Deep data availability rating reflects the number of scientific studies about the product or ingredient in the published scientific literature.