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1-NAPHTHOL


image source: PubChem
Health Concerns of the Ingredient:
Overall Hazard
 
 
 
 
Developmental &
reproductive toxicity
 
 
 

About 1-NAPHTHOL: Petroleum-derived ingredient; used in hair color and bleaching products.

Function(s): Hair Colorant; HAIR DYEING

Synoym(s): 1-HYDROXYNAPHTHALENE; 1-HYDROXYNAPTHALENE; 1-NAPHTHALENOL; 1-NAPHTHYL ALCOHOL; 1NAPHTHALENOL; ALPHA-NAPHTHOL; CI 76605; OXIDATION BASE 33; 1-HYDROXYNAPHTHALENE; 1-NAPHTHALENOL; ALPHA-HYDROXYNAPHTHALENE

Use restrictions

Concern Reference
Restricted in cosmetics (recommendations or requirements) - use, concentration, or manufacturing restrictions - CosIng
Restricted in cosmetics (recommendations or requirements) - use, concentration, or manufacturing restrictions - Health Canada
Recommended restricted in cosmetics - use, concentration, or manufacturing restrictions - Product type restrictions or differences noted in safety assessment by industry panelCosmetic Ingredient Review Assessments
Determined safe for use in cosmetics, subject to concentration or use limitations - CTFA International Cosmetic Ingredient Dictionary and Handbook

Allergies/immunotoxicity

Concern Reference
Human skin toxicant or allergen - strong evidenceCosmetic Ingredient Review Assessments
Human skin toxicant or allergen - strong evidence

Organ system toxicity (non-reproductive)

Concern Reference
Known human lung and skin toxicant (only for products that may be aerosolized (airborne); products for use on skin)European Union - Classification & Labelling
Classified as toxic or harmful (only for products for use around the mouth; products for use on the lips; products for use on skin)European Union - Classification & Labelling
Classified as not expected to be potentially toxic or harmfulEnvironment Canada Domestic Substance List

Occupational hazards

Concern Reference
Allowed workplace exposures restricted to low dosesEuropean Union - Classification & Labelling

Cancer

Concern Reference
Cancer - limited evidenceCTFA International Cosmetic Ingredient Dictionary and Handbook

Irritation (skin, eyes, or lungs)

Concern Reference
Classified as irritantEuropean Union - Classification & Labelling

Ecotoxicology

Concern Reference
Not suspected to be an environmental toxinEnvironment Canada Domestic Substance List

Data gaps

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 Assessments
Insufficient data to determine safetyCosmetic Ingredient Review Assessments
1,359 studies in PubMed science library may include information on the toxicity of this chemical see search results ->NLM PubMed

Persistence and bioaccumulation

Concern Reference
Not suspected to be persistentEnvironment Canada Domestic Substance List
Not suspected to be bioaccumulativeEnvironment Canada Domestic Substance List

Data Sources

CIR (Cosmetic Ingredient Review). 2006. CIR Compendium, containing abstracts, discussions, and conclusions of CIR cosmetic ingredient safety assessments. Washington DC.
CPS&Q (Consumer Products Safety & Quality) formely known as ECB (European Chemicals Bureau). 2008. Classification and Labelling: Chemicals: Annex VI of Directive 67/548/EEC through the 31st ATP.
CTFA (Cosmetic, Toiletry and Fragrance Association). 2006. International Cosmetic Ingredient Dictionary and Handbook, 11th Edition. Color Additive Information. Washington, DC.
EC (Environment Canada). 2008. Domestic Substances List Categorization. Canadian Environmental Protection Act (CEPA) Environmental Registry.
EU (European Union)- Strategy for Endocrine Disrupters 2007. Commision on endocrin disruption requested by the European Parliament in 1998.
European Commission. 2013. Cosing, the European Commission database with information on cosmetic substances and ingredients. Accessed on March 1, 2013 at http://ec.europa.eu/consumers/cosmetics/cosing/ .
Health Canada. 2011. List of Prohibited and Restricted Cosmetic Ingredients. Canada's Cosmetic Ingredient Hotlist. March 2011.
NLM (National Library of Medicine). 2012. PubMed online scientific bibliography data. http://www.pubmed.gov.

About the ratings

EWG provides information on personal care product ingredients from the published scientific literature, to supplement incomplete data available from companies and the government. The ratings below indicate the relative level of concern posed by exposure to the ingredients in this product - not the product itself - compared to other product formulations. The ratings reflect potential health hazards but do not account for the level of exposure or individual susceptibility, factors which determine actual health risks, if any. Learn more | Legal Disclaimer