Abstract
The combing response is one of the important quality factors of hair care products. In this report, an objective evaluation method for combing response was discussed, and a new type of evaluation device that is equipped with a vertical articulated type robot and a comb type probe mounted to a strain gauge was developed. It is applied to a hair tress with the view to substitute combing action of a human hand. The objects of the study are the factor analyses of the conditioner components for the combing response and application to the development of hair care products such as hair conditioners, the effects of cationic surface-active agents, the constituent hair conditioner were discussed and the evaluation results were compared with a sensory evaluation. The experimental results are summarized as follows: the effects of the combing response to the hair conditioners, based on several levels of concentration and varieties of cationic surface-active agents, were accurately detected, and a correlation to the sensory evaluated values was observed. From these data, this evaluation method was estimated to provide a rapid and objective detection of the combing response and is applicable for the development of hair care products. From the measurement of normal and damaged hair, a precise difference was detected and the method was found to be effective for the estimation of hair conditions.
