PCA-Na smoothing effect on wet hair

Abstract

As a result of the evaluation of the squeaking for wet hair, we found the strong correlation between squeaking and frictional coeffcient on wet hair. Based on this result, the frictional coeffcient on the hair was evaluated to predict the squeakiness reducing effects of moisturizers on wet hair.
Moisturizers investigated are PCA-Na, 1, 3-BG, Glycerin, Sorbitol and Lactate-Na. After each moisturizer was added into the SLES solution and hair pieces were washed in each solution, the frictional coefficient was measured. Among moisturizers, PCA-Na showed the remarkable friction reduction effect of wet hair.
As for the variety of the anionic surfactant solutions, PCA-Na works as the most effective friction reducer for the surfactants bearing SO₃H group.