Oak bark extract/salicylic acid/benzoic acid ointment attenuates the inflammatory response in a murine model of hair shaving associated dermatitis May 2016 in “Journal of the American Academy of Dermatology” We don't know much about this study yet. We're maintaining the world's largest resposity of hair loss research. You can help out the community by sending a PDF of this study here . Not sure how to get a study's PDF? You can email the authors of the study. View this study on jaad.org → https://doi.org/10.1016/j.jaad.2016.02.365