The long term moisturizing effect of ten different skin care products was tested on 22 female volunteers using a\r\nlow frequency electrical bioimpedance instrument. We found large differences in the moisturizing effect between different\r\nproducts and also large interpersonal variations. Products which gave a large increase in skin hydration on one person\r\ncould have no effect on another person. These results suggest that there are differences in skin types and that one particular\r\nformulation with a given mode of action may be ideal for one skin type but inappropriate for another.
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