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Data: Fair

Azelaic Acid

  • This ingredient’s score is higher if used in products that will not be immediately rinsed off due to increased risk of absorption.
  • This ingredient’s score is higher if used in products that will not be immediately rinsed off due to increased risk of absorption.
  • Products with the EWG VERIFIED mark have met use restrictions and warnings based on EWG review of company data.

IMAGE SOURCE: PubChem

SEARCH PRODUCTS

Other Concerns

Use restrictions (moderate)

SYNONYMS

● 1,7-DICARBOXYHEPTANE
● 1,7-HEPTANEDICARBOXYLIC ACID
● ANCHOIC ACID
● AZELAIC ACID
● LEPARGYLIC ACID
● NONANEDIOIC ACID

Restricted

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


Azelaic Acid is a dicarboxylic acid.

Common concerns

See how this product scores for common concerns.

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

Ingredient concerns

  • CONCERNS
  • DATA SOURCES

Products with this Ingredient

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serums & essences17 products
facial moisturizer/treatment16 products
facial cleanser13 products
mask7 products
antiperspirant/deodorant5 products
exfoliant/scrub4 products
shampoo3 products
body wash/cleanser2 products
conditioner2 products
toners/astringents2 products
moisturizer2 products
hand cream1 products
concealer1 products
1 products
makeup remover1 products
facial cleansing wipes1 products
daily use with SPF1 products

Use restrictions

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CONCERN REFERENCE
Restricted in cosmetics (recommendations or requirements) - use, concentration, or manufacturing restrictions - anyOpen scientific literature
Determined safe for use in cosmetics, subject to concentration or use limitations - Distinction between safe conc in leave-on and rinse-offCosmetic Ingredient Review Assessments

Cancer

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CONCERN REFERENCE
Not likely to be carcinogenic in humansEPA Water Disinfection By-Products Carcinogenicity

Ecotoxicology

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CONCERN REFERENCE
Not suspected to be an environmental toxinEnvironment Canada Domestic Substance List

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 Assessments

Organ system toxicity (non-reproductive)

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

Persistence and bioaccumulation

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CONCERN REFERENCE
Not suspected to be persistentEnvironment Canada Domestic Substance List
Not suspected to be bioaccumulativeEnvironment Canada Domestic Substance List

Data gaps

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CONCERN REFERENCE
467 studies in PubMed science library may include information on the toxicity of this chemicalNLM PubMed
  • Open scientific/peer reviewed literature
  • CIR (Cosmetic Ingredient Review). 2006. CIR Compendium, containing abstracts, discussions, and conclusions of CIR cosmetic ingredient safety assessments. Washington DC.
  • EPA (U.S. Environmental Protection Agency). 2006. EPA Water Disinfection By-Products with Carcinogenicity Estimates. Last updated: 10 April 2006.
  • EC (Environment Canada). 2008. Domestic Substances List Categorization. Canadian Environmental Protection Act (CEPA) Environmental Registry.
  • NLM (National Library of Medicine). 2012. PubMed online scientific bibliography data. http://www.pubmed.gov.

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

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

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