Effect Of The Pretreatment To Permanent Wave Formation Of Hair

The effect of the modification of human hair components on the permanent wave set of a human hair was investigated by analyzing the wave performance for both normal hairs and pretreatment hairs. Pretreatments carried out by treating the normal hairs with formic acid and acetic acid, ethanol/ chloroform, and boiling water. The difference between the protein chain rearrangements to equilibrium the curled configuration of normal and pretreatment hairs were observed during drying of the waved hairs. Specifically, the hair samplers pretreated with formic acid and acetic acid or ethanol/chloroform have made it difficult to maintain the waving performance in wet state. These results suggest that the constituent components of CMC play an important role to equilibrium the curled configuration by effectively operating as an adhesion component between the cells. A role of the constituent components of CMC for bleached hairs is also discussed.