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Data: Limited

T Butyl Hydroquinone

  • Products with the EWG VERIFIED mark have met use restrictions and warnings based on EWG review of company data.

IMAGE SOURCE: PubChem

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Other Concerns

Use restrictions (moderate)

SYNONYMS

1,4-BENZENEDIOL, 2-(1,1-DIMETHYLETHYL)-, 1,4BENZENEDIOL, 2(1,1DIMETHYLETHYL), 1-BUTYL HYDROQUINONE, 2-(1,1-DIMETHYLETHYL)- 1,4-BENZENEDIOL, 2-(1,1-DIMETHYLETHYL)-1,4-BENZENEDIOL, 2-TERT-BUTYL-1,4-DIHYDROXYBENZENE, 2-TERT-BUTYLHYDROQUINONE, HYDROQUINONE DE T-BUTYLE, T-BUTYL HYDROQUINONE, TBHQ, and TERT-BUTYL -1,4-BENZENEDIOL

TBHQ is a phenol.

Common concerns

See how this product scores for common concerns.

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

Ingredient concerns

  • CONCERNS
  • DATA SOURCES

Products with this Ingredient

Expand content Collapse content
concealer11 products
hair treatment/serum4 products
conditioner3 products
antiperspirant/deodorant (men's)2 products
skin fading/lightener2 products
moisturizer2 products
hair styling aide2 products
mascara2 products
body wash/cleanser1 products
foot moisturizer1 products
exfoliant/scrub1 products
hand sanitizer1 products
detangler1 products
1 products
facial moisturizer/treatment1 products
body oil1 products

Use restrictions

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CONCERN REFERENCE
Restricted in cosmetics (recommendations or requirements) - use, concentration, or manufacturing restrictions - Use is restricted in Canadian cosmeticsCanada - Prohibited and Restricted Cosmetics Ingredients
Determined safe for use in cosmetics, subject to concentration or use limitations - Safe for use in cosmetics with some qualificationsCosmetic Ingredient Review Assessments

Data gaps

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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
676 studies in PubMed science library may include information on the toxicity of this chemicalNLM PubMed

Multiple, additive exposure sources

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

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

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

Cancer

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CONCERN REFERENCE
Not likely to be carcinogenic in humansOpen scientific literature
  • Health Canada. 2007. List of Prohibited and Restricted Cosmetic Ingredients. Canada's Cosmetic Ingredient Hotlist. March 2007.
  • CIR (Cosmetic Ingredient Review). 2006. CIR Compendium, containing abstracts, discussions, and conclusions of CIR cosmetic ingredient safety assessments. Washington DC.
  • NLM (National Library of Medicine). 2012. PubMed online scientific bibliography data. http://www.pubmed.gov.
  • 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.
  • 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.
  • EC (Environment Canada). 2008. Domestic Substances List Categorization. Canadian Environmental Protection Act (CEPA) Environmental Registry.
  • Open scientific/peer reviewed literature

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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