Cysteine Contents of Purified Human Hair Low-Sulfur Protein Components March 1990 in “ Journal of Dermatological Science ” Satoshi Dekio, Joji Jidoi 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 jdsjournal.com →