Correlation between element concentrations and x‐ray diffraction patterns in hair

The study found a correlation between x-ray diffraction patterns and the elemental composition of human hair. Using synchrotron radiation, researchers analyzed human hair and identified factors that contributed to the appearance of a diffuse ring in keratin fibrils, which corresponded to a molar periodicity of 4.44 nm. The study also explored the connection between this ring and the elemental composition of hair, particularly focusing on the role of metals in the matrix complex.