--- title: 'Non-Toxic' Nail Polish May Contain Harmful Chemicals, Study Says description: Even "non-toxic" nail polish labeled three-free, five-free, 10-free or 13-free might contain harmful chemicals, a new study says. canonical: https://time.com/5419483/nail-polish-chemicals/ author: Jamie Ducharme article:opinion: false article:content_tier: free article:published_time: 2018-10-10T15:02:14.000Z article:modified_time: 2026-02-23T21:41:24.628Z article:section: Health og:title: Even 'Non-Toxic' Nail Polish May Contain Harmful Chemicals og:description: You might not know what's in your bottle, a new study says og:url: https://time.com/5419483/nail-polish-chemicals/ og:site_name: TIME og:image: https://static.time.com/v3/assets/bltea6093859af6183b/blt18f2dd1b64cfeb9e/69893c2f0a4a2234859d3e7d/nail-polish.jpg?branch=production&width=1200&quality=75&auto=webp&crop=16:9 og:image:width: 6000 og:image:height: 3375 og:image:alt: Young woman painting fingernails og:type: article twitter:card: summary_large_image twitter:title: Even 'Non-Toxic' Nail Polish May Contain Harmful Chemicals twitter:description: You might not know what's in your bottle, a new study says twitter:image: https://static.time.com/v3/assets/bltea6093859af6183b/blt18f2dd1b64cfeb9e/69893c2f0a4a2234859d3e7d/nail-polish.jpg?branch=production&width=1200&quality=75&auto=webp&crop=16:9 ---  # Even 'Non-Toxic' Nail Polish May Contain Harmful Chemicals, Study Says > Sponsored content. 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Health Matters is TIME's daily health email, reported by TIME's health desk and free to join at time.com/newsletters. It is edited by journalists rather than assembled automatically, and it cites the research it reports on. #### Is Health Matters free? Yes. Health Matters is a free daily newsletter from TIME, available at time.com/newsletters. #### Who reads TIME's Health Matters newsletter? Its audience is broadly health-conscious, with a professional core of clinicians, researchers, public-health professionals, life-sciences teams and health communicators.  by [Jamie Ducharme](https://time.com/author/jamie-ducharme/)  ## Jamie Ducharme Ducharme is a contributor to TIME. Oct 10, 2018 3:02 PM UTC  Young woman painting fingernails Young woman painting fingernails Burak Karademir—Getty Images  by [Jamie Ducharme](https://time.com/author/jamie-ducharme/)  ## Jamie Ducharme Ducharme is a contributor to TIME. Oct 10, 2018 3:02 PM UTC Cosmetics are subject to very few regulations in the U.S. While they fall under [Food and Drug Administration (FDA) purview](https://www.fda.gov/cosmetics/guidanceregulation/lawsregulations/ucm074162.htm), current laws do not require beauty products and their ingredients to be FDA-approved before hitting shelves. Even laws that pertain to cosmetic labeling are somewhat loose; many buzzwords that show up on product packaging [mean, effectively, nothing](http://fortune.com/2017/06/27/fda-cosmetics-regulations/). That’s also the case for many nail polishes. And even brands that tout safe formulations may be substituting some toxic chemicals for equally dangerous alternatives, suggests [a new study](https://pubs.acs.org/doi/10.1021/acs.est.8b04495) published Wednesday in the journal _Environmental Science & Technology_. “It’s sort of like playing a game of chemical Whac-A-Mole, where one toxic chemical is removed and you end up chasing down the next potentially harmful chemical substituted in,” says study co-author Anna Young, a doctoral student at Harvard University. In the early 2000s, many nail polish companies began labeling their products “three-free,” to signify that they were made without dibutyl phthalate (a plasticizer used to enhance a polish’s texture and function, but that is linked to potential reproductive and developmental problems), toluene (a nervous system and developmental disruptor) and formaldehyde (a carcinogen). Since then, many brands have eliminated even more chemicals commonly used in nail polish, labeling their products “five-free,” “10-free” and even “13-free.” But even with these labels, it can be difficult to determine which chemicals are actually excluded, and which have been added in their place. To find out, Young and her colleagues purchased and tested the contents of 40 nail polishes from 12 different brands, labeled three-free all the way up to 13-free. While the study did not name specific brands, the authors noted that two of the tested brands made up a combined 15% of the nail polish market. “We found that the meaning of these claims isn’t standardized across brands, and there’s no clear information on whether these nail polishes are actually less toxic,” Young says. “Sometimes, when one known harmful chemical was removed, the polish instead contained another similar chemical that may be just as toxic.” While most five-free polishes lacked the the same handful of ingredients, the researchers found far less consistency among polishes marked 10-free and above, and the brands varied in terms of how well they adhered to the claims on their labels. None of the samples contained toxic dibutyl phthalate. But polishes with a range of labels tested positive for at least one of two other plasticizers shown to be similarly risky to health. One polish even contained a plasticizer it claimed to exclude from its formula. While the sample wasn’t representative of the entire nail polish market, it did include some of the industry’s most popular brands. Young says that makes the findings relevant to anyone who wears nail polish, even though it’s not yet clear how much exposure it takes for these chemicals to affect a person’s health. The results are especially significant for nail salon employees, who are subjected to range of [health risks](http://time.com/3851827/nail-polish-manicurists-health/) and often [poor working conditions](http://time.com/3928660/new-york-nail-salon-licensing-law/). “This is especially important for the over 400,000 nail salon workers in the U.S. who could be exposed on a daily basis, for many years, to chemicals that have been linked to health effects on fertility, the reproductive system, fetal development, thyroid function and possibly even obesity or cancer,” Young says. An occasional manicure probably isn’t cause for major concern, Young says, but the study underscores the need for better transparency and consistency in the beauty world. She’s not alone in that belief: Senators Dianne Feinstein and Susan Collins last year [proposed a bill](https://www.feinstein.senate.gov/public/%5Fcache/files/4/4/445a9268-4964-4de0-89f9-4caf577099f2/7880850281C8B455842E21725C30AAD5.2015-04-20-personal-care-products-safety-act.pdf) that would update the Federal Food, Drug and Cosmetic Act to [ensure the safety of cosmetics](http://time.com/4777231/fda-bill-cosmetics-feinstein-collins/). “These labels should try to be more standardized and validated by an unbiased third-party,” Young says. “It’s not as simple as what’s not in the polish; you have to address what’s still in the polish, or what’s being substituted in as a replacement chemical. We need more clear information and explanations of what these exclusions mean for health, and whether they actually reduce the overall toxicity of the nail polish.” ```json [{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://time.com/5419483/nail-polish-chemicals/","mainEntityOfPage":{"@type":"WebPage","@id":"https://time.com/5419483/nail-polish-chemicals/"},"headline":"Even 'Non-Toxic' Nail Polish May Contain Harmful Chemicals, Study Says","datePublished":"2018-10-10T15:02:14.000Z","dateModified":"2026-02-23T21:41:24.628Z","description":"You might not know what's in your bottle","url":"https://time.com/5419483/nail-polish-chemicals/","keywords":["toxins","healthytime"],"thumbnailUrl":"https://static.time.com/v3/assets/bltea6093859af6183b/blt18f2dd1b64cfeb9e/69893c2f0a4a2234859d3e7d/nail-polish.jpg?branch=production&width=1200&quality=75&auto=webp&crop=1200:675&height=675","author":[{"@type":"Person","name":"Jamie Ducharme","jobTitle":"Ducharme is a contributor to TIME.","url":"https://time.com/author/jamie-ducharme/"}],"articleSection":"Health","image":[{"@type":"ImageObject","url":"https://static.time.com/v3/assets/bltea6093859af6183b/blt18f2dd1b64cfeb9e/69893c2f0a4a2234859d3e7d/nail-polish.jpg?branch=production&width=1200&quality=75&auto=webp&crop=1200:675&height=675","width":1200,"height":675,"headline":"Young woman painting fingernails","caption":"Young woman painting fingernails","creditText":"Burak Karademir—Getty Images","representativeOfPage":true}],"publisher":{"@type":"Organization","name":"Time","url":"https://time.com/","logo":{"@type":"ImageObject","url":"https://time.com/images/logo.png","width":528,"height":156},"foundingDate":"March 3, 1923","sameAs":["https://www.facebook.com/time","https://www.instagram.com/time/?hl=en","https://twitter.com/time","https://www.pinterest.com/timemagazine"]}},{"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"item":{"@id":"/section/health/","name":"Health"}},{"@type":"ListItem","position":2,"item":{"@id":"/tag/toxins/","name":"toxins"}},{"@type":"ListItem","position":3,"item":{"@id":"https://time.com/5419483/nail-polish-chemicals/","name":"Even 'Non-Toxic' Nail Polish May Contain Harmful Chemicals, Study Says"}}]}] ```