The florence statement on triclosan and triclocarban

Rolf U. Halden, Avery E. Lindeman, Allison E. Aiello, David Andrews, William A. Arnold, Patricia Fair, Rebecca E. Fuoco, Laura A. Geer, Paula I. Johnson, Rainer Lohmann, Kristopher McNeill, Victoria P. Sacks, Ted Schettler, Roland Weber, R. Thomas Zoeller, Arlene Blum

Research output: Contribution to journalArticlepeer-review

104 Scopus citations


The Florence Statement on Triclosan and Triclocarban documents a consensus of more than 200 scientists and medical professionals on the hazards of and lack of demonstrated benefit from common uses of triclosan and triclocarban. These chemicals may be used in thousands of personal care and consumer products as well as in building materials. Based on extensive peer-reviewed research, this statement concludes that triclosan and triclocarban are environmentally persistent endocrine disruptors that bioaccumulate in and are toxic to aquatic and other organisms. Evidence of other hazards to humans and ecosystems from triclosan and triclocarban is presented along with recommendations intended to prevent future harm from triclosan, triclocarban, and antimicrobial substances with similar properties and effects. Because antimicrobials can have unintended adverse health and environmental impacts, they should only be used when they provide an evidence-based health benefit. Greater transparency is needed in product formulations, and before an antimicrobial is incorporated into a product, the long-term health and ecological impacts should be evaluated.

Original languageEnglish (US)
Article number064501
JournalEnvironmental health perspectives
Issue number6
StatePublished - Jun 2017
Externally publishedYes

Bibliographical note

Funding Information:
The content of this publication is solely the responsibility of the authors and does not necessarily represent the official views of their organizations or funding sources. R.U.H.'s contribution to this project was supported in part by grant number R01ES020889 and its supplements from the National Institute of Environmental Health Sciences (NIEHS) and by grant number LTR 05/01/12 from the Virginia G. Piper Charitable Trust. A.E.A. received an unrestricted research grant from Gojo; Gojo had no role in the support of this research or any of A.E.A.’s research related to triclosan. W.A.A. received a grant from the National Science Foundation [CBET 0,967,163 (Using triclosan and polyhalogenated dibenzo-p-dioxins to elucidate the importance of natural and anthropogenic sources of OH-PBDEs in fresh and estuarine waters)] that ended in 2014. The Green Science Policy Institute [a 501(c)(3) nonprofit organization] received funding from New York Community Trust that was used to support the contributions of A. E.L., R.E.F., V.P.S., and A.B. to this project. Green Science Policy Institute has no actual or potential competing financial interests relating to this publication. D.A. is employed by Environmental Working Group and has no actual or potential competing financial interests to declare. T.S. works with Science and Environmental Health Network and has no actual or potential competing financial interests to declare. All other authors have no actual or potential competing financial interests to declare.

Publisher Copyright:
© 2017, Public Health Services, US Dept of Health and Human Services. All rights reserved.


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