Human Hair Cross-Section Analysis Using the AIM-9000 Infrared Microscope

In order to control the permeability of the product components of hair-treatment and hair-coloring products into human hair, measurement methods that allow direct and straightforward analysis of human hair need to be established. This article demonstrates the creation of chemical images of amide I and cysteic acid in the cross sections of untreated black hair and permed/bleached hair using the AIM-9000. The cross sections of human hair were prepared using a microtome manufactured by Leica Biosystems.