Estimation of Application Feeling of Lotion based on Temperature Measurement

: The quantification is required about application feeling of the skin lotion when it is designed and evaluated. In this paper, we propose a system that estimates the application feeling by temperature measurement in order to realize an objective and quantitative evaluation. We measured the temperatures on the finger-shaped sensor and the applied table during the application of the lotion. The measurements were conducted by a proposed measurement system that simulates the application movement. Seven independent features were calculated from the measured temperature waveform, and the relationship with the five application feelings was modeled by multiple regression analysis. The resulting estimation model of the application feelings showed high accuracy. Therefore, we concluded that the proposed measurement system is applicable for estimation application feeling of the skin lotion.