METHOD FOR EVALUATING OSMOSIS OF COMPOSITION CONTAINING HYDROPHOBIC AMINO ACID OR PEPTIDE CONTAINING HYDROPHOBIC AMINO ACID INTO KERATIN FIBER

PROBLEM TO BE SOLVED: To provide a method for evaluating osmosis of a composition that contains hydrophobic amino acids or peptides that contains hydrophobic amino acids to keratine fibers in a simple and quick manner. SOLUTION: In this method for evaluating osmosis of the composition containing hydrophobic amino acids or peptides containing hydrophobic amino acid into keratine fibers, the keratine fiber treated by the composition, containing one kind of hydrophobic amino acid or more, or the peptide containing the hydrophobic amino acid selected from among a group composed of leucine, tryptophan, phenylalanine and proline is cut in the direction of its diameter, the obtained piece is dyed by basic dye, and then the cut face is observed by an optical microscope. COPYRIGHT: (C)2009,JPO&INPIT