Kao has developed a new skin cleansing technology based on a unique mixture of anionic surfactants, which exhibit well-balanced properties of aggregability and water solubility, as the key ingredient. In a mildness study, the influence of the cleansing agent in the new cleansing technology on the skin was evaluated by the sorption amount of the agent (sum of adsorption amount and penetration amount) to the skin stratum corneum. Results showed that the sorption amount of the agent was much sma...