抄録
Two types of peptide fractions were extracted from the human hairs and the properties for the fractions were investigated. The molecular weight of A fractions was 11 kDa, and that of B fractions 9.7 kDa. Artificially damaged human hairs were prepared by repeating the bleach treatments, and the recoveries in physical properties for the damaged hairs were estimated by impregnating those extracted peptide fractions. When the A fractions were impregnated into the damaged hairs, the formation of permanent waves was slightly recovered. As for the B fractions the tensile strengths for the damaged hairs were regained to some extent.
