T Butyl Hydroquinone
- †Products with the EWG VERIFIED mark have met use restrictions and warnings based on EWG review of company data.
Other ConcernsUse restrictions (moderate)
SYNONYMS1,4-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.
See how this product scores for common concerns.
LOWAllergies & Immunotoxicity
LOWDevelopmental and Reproductive Toxicity
- DATA SOURCES
Products with this Ingredient
|hair treatment/serum||4 products|
|hair styling aide||2 products|
|daily use with SPF||2 products|
|antiperspirant/deodorant (men's)||2 products|
|skin fading/lightener||2 products|
|facial moisturizer/treatment||1 products|
|body wash/cleanser||1 products|
|foot moisturizer||1 products|
|body oil||1 products|
|hand sanitizer||1 products|
|Restricted in cosmetics (recommendations or requirements) - use, concentration, or manufacturing restrictions - Use is restricted in Canadian cosmetics||Canada - Prohibited and Restricted Cosmetics Ingredients|
|Determined safe for use in cosmetics, subject to concentration or use limitations - Safe for use in cosmetics with some qualifications||Cosmetic Ingredient Review Assessments|
|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 product||Cosmetic Ingredient Review Assessments|
|676 studies in PubMed science library may include information on the toxicity of this chemical||NLM PubMed|
Multiple, additive exposure sources
|Designated as safe for general or specific, limited use in food||FDA Everything Added to Food|
|Designated as safe for general or specific, limited use in food||FDA Food Additive Status|
|Not suspected to be an environmental toxin||Environment Canada Domestic Substance List|
Organ system toxicity (non-reproductive)
|Classified as not expected to be potentially toxic or harmful||Environment Canada Domestic Substance List|
Persistence and bioaccumulation
|Not suspected to be persistent||Environment Canada Domestic Substance List|
|Not suspected to be bioaccumulative||Environment Canada Domestic Substance List|
|Not likely to be carcinogenic in humans||Open 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
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.