The oil is produced by a process that artificially mimics and accelerates the normal acting process in the leaf, converting it into p-menthane-3,8-diol (PMD), according to the company website.

PMD, an insect repellent that can be derived from steam distillate residue of leaves of lemon eucalyptus. No QSAR studies are known in literature. We performed ab initio (RHF/6-31G**) study of PMD ...

“The specific active chemical ingredient is called p-Menthane-3,8-diol, or PMD.” “For children less than 3 years, avoid products containing oil of lemon eucalyptus or para-menthane-diol ...

It contains a chemical called p- Menthane-3,8-diol (PMD), which is an effective insect repellent. PMD is classified as a biopesticide by the Environmental Protection Agency (EPA) and is considered ...