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HOW WE DETERMINE SCORES Learn more About EWG VERIFIED®

Data: Fair

Propanediol

IMAGE SOURCE: PubChem

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Other Concerns

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

SYNONYMS

● 1,3-DIHYDROXYPROPANE
● 1,3-PROPYLENE GLYCOL
● 1,3PROPANEDIOL
● PROPANE-1,3-DIOL
● PROPANEDIOL

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

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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facial moisturizer/treatment504 products
foundation414 products
serums & essences400 products
mask334 products
concealer298 products
daily use with SPF202 products
moisturizer201 products
facial cleanser164 products
around-eye cream162 products
shampoo136 products
conditioner123 products
hair treatment/serum122 products
toners/astringents114 products
recreational sunscreen100 products
exfoliant/scrub94 products
hair styling aide83 products
antiperspirant/deodorant77 products
liquid hand soap68 products
body wash/cleanser59 products
makeup primer59 products
eye shadow53 products
sunless tanning50 products
brow liner48 products
BB cream47 products
bronzer/highlighter40 products
setting powder/spray39 products
hair color and bleaching34 products
anti-aging31 products
styling gel/lotion30 products
mascara30 products
CC cream30 products
makeup remover29 products
hand cream28 products
eye liner24 products
body spray19 products
bar soap17 products
hand sanitizer17 products
antiperspirant/deodorant (men's)16 products
baby sunscreen16 products
13 products
hair spray12 products
baby lotion11 products
after sun product11 products
blush11 products
lip balm11 products
detangler10 products
baby shampoo10 products
toothpaste8 products
baby soap7 products
foot moisturizer7 products
after shave7 products
shaving cream7 products
skin fading/lightener7 products
body firming lotion6 products
shaving cream (men's)6 products
hair-loss treatment5 products
body oil5 products
glitter5 products
lipstick5 products
damaged skin treatment4 products
foot cleansing4 products
mouthwash3 products
eye makeup remover3 products
styling mousse/foam3 products
facial powder3 products
oil controller3 products
lip plumper3 products
baby toothpaste3 products
foot odor control3 products
eyelash glue3 products
facial cleansing wipes3 products
bubble bath2 products
baby wipes2 products
baby bubble bath2 products
lip gloss2 products
bath oil/salts/soak2 products
tanning oil2 products
makeup removing wipes2 products
other eye makeup1 products
cuticle treatment1 products
hair removal waxes1 products
beard care1 products
fragrance for men1 products
beard cleanser1 products
tooth whitening1 products
diaper cream1 products
body cleansing wipes1 products

Enhanced skin absorption

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CONCERN REFERENCE
Penetration enhancerOpen scientific literature

Irritation (skin, eyes, or lungs)

Expand content Collapse content
CONCERN REFERENCE
Classified as skin irritantNational Library of Medicine HazMap
Limited evidence of any irritationOpen scientific literature
Limited evidence of any irritationOpen scientific literature

Cancer

Expand content Collapse content
CONCERN REFERENCE
One or more in vitro tests on mammalian cells show positive mutation resultsOpen scientific literature

Endocrine disruption

Expand content Collapse content
CONCERN REFERENCE
One or more studies show weak endocrine disruptionOpen scientific literature

Ecotoxicology

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

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

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

Data gaps

Expand content Collapse content
CONCERN REFERENCE
81588 studies in PubMed science library may include information on the toxicity of this chemicalNLM PubMed
  • Open scientific/peer reviewed literature
  • NLM (National Library of Medicine). 2006. HazMap — Occupational Exposure to Hazardous Agents.
  • 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
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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