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Typical 2D FTIR-imaging data showing surface lipid removal through solvent extraction. The images are built-up from thousands of individual measurements. The measurements are presented in false color to represent, in this example, the level of lipids.
Hair Damage and Repair
Spectrometry
If you are interested in how your products, or styling devices, might be affecting hair proteins and lipids then you might consider using Fourier transform infrared spectroscopy (FTIR) or Raman spectroscopy to measure hair damage.
FTIR and Raman spectroscopy techniques are able to detect changes in the chemical composition and internal structures of hair. These methods can either be used over large surface areas to measure overall changes in the sample, or they can be used to measure changes in tiny, focused parts of the sample. Thousands of these focused measurements can be built-up into 2D, and even 3D, images that can show the distribution of different components in the hair. FTIR and Raman spectroscopy are widely used to investigate chemical damage to proteins, changes in protein cross-linking, changes in hair keratin structures and the levels of hair lipids. These measurements are used to investigate damage prevention and repair.
TRI Publications
Zhang et al (2018)
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Typical 2D FTIR-imaging data showing internal lipid removal through solvent extraction. Images were taken of sectioned hair samples.