I use Doterra Oils on me and in my business in diffusers to help calm the grooming environment. https://www.mydoterra.com/dedecroy/#/
I use this roll on for my skin, any rashes or minor skin issues.  In my opinion only, I am not a Doctor!
"Many essential oils, such as eucalyptus oil, tea tree oil, cinnamon, citrus, pennyroyal, peppermint, pine, sweet birch, wintergreen, and ylang ylang are toxic to pets"