Find products and ingredients Learn how Skin Deep® works Meet our experts Discover EWG VERIFIED™

Data: Fair

Potassium Persulfate

  • This ingredient’s score is higher if used in products that are inhalable (e.g., sprays, powders) because of respiratory concerns.
  • This ingredient’s score is higher if used in products intended for use around mouth due to increased risk of ingestion and absorption.
  • This ingredient’s score is higher if used in products intended for use on lips due to increased risk of ingestion and 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), Non-reproductive organ system toxicity (low), Irritation (skin, eyes, or lungs) (high), and Occupational hazards (high)

SYNONYMS

DIPOTASSIUM PEROXODISULPHATE, DIPOTASSIUM SALT PEROXYDISULFURIC ACID, PEROXYDISULFURIC ACID ([(HO)S(O)2]2O2), DIPOTASSIUM SALT, PEROXYDISULFURIC ACID, DIPOTASSIUM SALT, and POTASSIUM PERSULFATE

Potassium Persulfate is an inorganic salt.

Common concerns

See how this product scores for common concerns.

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

Ingredient concerns

  • CONCERNS
  • DATA SOURCES

Products with this Ingredient

Expand content Collapse content
hair color and bleaching10 products
hair treatment/serum3 products
toothpaste1 products

Irritation (skin, eyes, or lungs)

Expand content Collapse content
CONCERN REFERENCE
Classified as irritantCPS&Q - Classification & Labelling

Use restrictions

Expand content Collapse content
CONCERN REFERENCE
Violation of industry recommendations - Restricted in cosmetics; use, concentration, or manufacturing restrictions - Safe for brief discontinuous use followed by thorough rinsingCosmetic Ingredient Review Assessments
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 - Safe for use in cosmetics with some qualificationsCosmetic Ingredient Review Assessments

Occupational hazards

Expand content Collapse content
CONCERN REFERENCE
Allowed workplace exposures restricted to low dosesCPS&Q - Classification & Labelling

Allergies/immunotoxicity

Expand content Collapse content
CONCERN REFERENCE
Human skin toxicant or allergen - strong evidenceCosmetic Ingredient Review Assessments
Human any toxicant or allergen - strong evidenceOpen scientific literature
Limited evidence of immune system toxicity or allergiesCPS&Q - Classification & Labelling

Organ system toxicity (non-reproductive)

Expand content Collapse content
CONCERN REFERENCE
Classified as toxic or harmfulCPS&Q - Classification & Labelling
Classified as not expected to be potentially toxic or harmfulEnvironment Canada Domestic Substance List
Classified as a low human health priorityEnvironment Canada Domestic Substance List

Data gaps

Expand content Collapse content
CONCERN REFERENCE
Unknown safety for non-permanent hair dyesCosmetic Ingredient Review Assessments
Safety unknown for products left on skinCosmetic Ingredient Review Assessments
Insufficient data to determine safetyCosmetic Ingredient Review Assessments
220 studies in PubMed science library may include information on the toxicity of this chemicalNLM PubMed

Miscellaneous

Expand content Collapse content
CONCERN REFERENCE
Occupational hazards related to handlingCPS&Q - Classification & Labelling

Informational

Expand content Collapse content
CONCERN REFERENCE
Industry or government recommendations for safe use: restrictions on concentration, impurities, product types, or manufacturing methods - Safe for brief discontinuous use followed by thorough rinsingCosmetic Ingredient Review Assessments

Multiple, additive exposure sources

Expand content Collapse content
CONCERN REFERENCE
Designated as safe for general or specific, limited use in foodFDA Food Additive Status
Designated as safe for general or specific, limited use in foodFDA Everything Added to Food

Ecotoxicology

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

Persistence and bioaccumulation

Expand content Collapse content
CONCERN REFERENCE
Not suspected to be bioaccumulativeEnvironment Canada Domestic Substance List
  • 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.
  • CIR (Cosmetic Ingredient Review). 2006. CIR Compendium, containing abstracts, discussions, and conclusions of CIR cosmetic ingredient safety assessments. Washington DC.
  • Open scientific/peer reviewed literature
  • 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.
  • FDA (U.S. Food and Drug Administration) 2006. Food Additive Status List. Downloaded from http://www.cfsan.fda.gov/%7Edms/opa-appa.html, Oct 16, 2006.
  • FDA (U.S. Food and Drug Administration). 2008. EAFUS [Everything Added to Food]: A Food Additive Database. FDA Office of Food Safety and Applied Nutrition.

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

Can’t find your product?

Enter the ingredients in EWG’s Build Your Own Report tool to get an approximate score for that product.

BUILD YOUR OWN REPORT

EWG research
on the go

Find personal care, cleaning, and food products on the EWG Healthy Living app.

DOWNLOAD THE APP