Abstract
Since the surface of the hair is covered with a fatty layer consisting of 18-MEA, the hair has water repellency and gloss, which gives it a smooth texture. However, if the hair undergoes physical or chemical damage, the lipid layer is peeled off, and a hydrophilic layer of protein appears. Therefore, there is no gloss to the hair, and it is easily entangled. In addition, if the structure of the hair is damaged, the components inside the hair leak easily, so the body of the hair is reduced. In other words, the damage occurring at the surface of the hair changes it from hydrophobic to hydrophilic. We show the changes in the hair which we have confirmed by using ionic fluorescent reagents.
