Аннотация:In this work we identify conformation-sensitive bands in the low-frequency micro-Raman spectra of human hair keratins. A comparison of hair spectra measured at different orientations of the sample relative to the exciting radiation reveals changes in an interval of 110-190 cm -1 , corresponding to vibrations of polarization sensitive α-helical structures. It was also shown that spectral interval of 235-353 cm -1 characterizes vibrations of β-structures.