Professor Toshihiro Fujii and co-workers proposed a concept of ¡Èself-recycle¡É. A number of problems with medical materials and cosmetics will be solved by use of self-originating biomaterial products instead of synthetic or non-self originating materials. From this point, human hair and nail are valuable sources to create safe and biocompatible products, because they are easily collected in large quantities from specific individuals and the protein contents are high. They developed novel procedures of protein extraction and film formation from these tissues.