Reply to: A commentary on "Hair analysis for biomonitoring of environmental and occupational exposure to organic pollutants."

In his comment on the review by Appenzeller and Tsatsakis, Doréa highlights the use of hair analysis for the biomonitoring of human exposure to mercury. Indeed, the relevance of this matrix for this specific purpose has been demonstrated in numerous works. We acknowledge that the review was voluntarily limited to "purely organic" pollutants, which excluded organic forms of metals such as methylmercury and ethylmercury. We also remind some important aspects related to the use of hair as a biomarker of exposure to mercury.