- This ingredient’s score is higher if used in products that are inhalable (e.g., sprays, powders) because of respiratory concerns.
- Products with the EWG VERIFIED mark have met use restrictions and warnings based on EWG review of company data.
Other ConcernsUse restrictions (moderate), Persistence and bioaccumulation (moderate), Non-reproductive organ system toxicity (moderate), and Ecotoxicology (low)
SYNONYMS(T-4)-BIS(1-HYDROXY-2(1H0-PYRIDINETHIONATO-O,S) ZINC, BIS(1-HYDROXY-2(1H)-PYRIDINETHIONATO)- ZINC, BIS(1-HYDROXY-2(1H)-PYRIDINETHIONATO)ZINC, PYRITHIONE ZINC, ZINC BIS(2-PYRIDYLTHIO)-N-OXIDE, ZINC PYRITHIONE, ZINC PYRITHIONE SUSPENSION, ZINC, BIS(1-HYDROXY-2(1H)-PYRIDINETHIONATO)-, ZINC, BIS(1HYDROXY2(1H)PYRIDINETHIONATOO,S), (T4), and ZINC, BIS[1-(HYDROXY-.KAPPA.O)-2(1H)-PYRIDINETHIONATO-.KAPPA.S2]-, (T-4)-
Restricted: EWG VERIFIED products cannot contain this ingredient without adequate substantiation
Zinc Pyrithione is an aromatic zinc compound. In the United States, Zinc Pyrithione may be used as an active ingredient in OTC drug products. When used as an active drug ingredient, the established name for Zinc Pyrithione is Pyrithione Zinc.
See how this product scores for common concerns.
LOWAllergies & Immunotoxicity
LOWDevelopmental and Reproductive Toxicity
- DATA SOURCES
Products with this Ingredient
Persistence and bioaccumulation
|Persistent or bioaccumulative and moderate to high toxicity concern in humans||Environment Canada Domestic Substance List|
|Persistent, bioaccumulative in wildlife||Canada PBTs - Accelerated Reduction/Elimination of Toxics (ARET)|
|Not suspected to be bioaccumulative||Environment Canada Domestic Substance List|
|Restricted in cosmetics (recommendations or requirements) - use, concentration, or manufacturing restrictions - Japan - restricted for use in some types of cosmetics (concentration limit)||Japan's Standards for Cosmetics|
|Restricted in cosmetics (recommendations or requirements) - use, concentration, or manufacturing restrictions - any||CosIng|
Organ system toxicity (non-reproductive)
|Classified as expected to be toxic or harmful||Environment Canada Domestic Substance List|
|Limited evidence of any toxicity||Scorecard.org Toxicity Information|
|One or more animal studies show classified as toxic effects at moderate doses (low dose studies may be unavailable for this ingredient)||EPA Toxic Release Inventory PBTs|
|Classified as a low human health priority||Environment Canada Domestic Substance List|
|Suspected to be an environmental toxin and be persistent or bioaccumulative||Environment Canada Domestic Substance List|
|Suspected to be an environmental toxin||Environment Canada Domestic Substance List|
|248 studies in PubMed science library may include information on the toxicity of this chemical||NLM PubMed|
- EC (Environment Canada). 2008. Domestic Substances List Categorization. Canadian Environmental Protection Act (CEPA) Environmental Registry.
- EC (Environment Canada). 1994. Accelerated Reduction/Elimination of Toxics (ARET). ARET substance list of persistent, bioaccumulative and toxic chemicals.
- Japan Ministry of Health, Labour and Welfare. 2006. Standards for Cosmetics. Evaluation and Licensing Division. Pharmaceutical and Food Safety Bureau.
- 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/ .
- ED (Environmental Defense). 2006. Scorecard _ The Pollution Information Site. http://www.scorecard.org.
- EPA (U.S. Environmental Protection Agency). 1999. Toxics Release Inventory Program. PBT Chemical Rule.
- 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.