The new instrumental method for evaluating smoothness of human hair.
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概要
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New instrumental method and apparatus that allow us to compare the effect of hair cosmetics on smoothness of human hair has been developed.Usually hair smoothness or roughness is felt when the hair is touched with the fingers. From this touch action the condition of the hair after putting on hair cosmetic is felt and the quality of hair cosmetics is often evaluated.During this research project a new instrumental method was developed. It allows us quantitative evaluation of the feel of smoothness at the time of touching hair. It was also confirmed that the actual feeling evaluated by expert panels agreed with the friction value measured by this apparatus.In addition this apparatus was improved by making it smaller, and by using the improved apparatus the direct measurement on the hair of a human's head became possible.
- 日本化粧品技術者会の論文
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