Water Retainable Ability of Oral Moisturizers

Residual Rates of Both Water Content and Weight When Dried with Warm Wind

Abstract

In order to evaluate the water retaining property, the method for measuring the changes of both water content and weight in the samples absorbed on filter papers when dried with a hair dryer were developed. In both the conditions of moisturizer only and water plus moisturizer, the residual rates of both water content and weight of liquid type (M-1,M-2) and jelly type (M-3) oral moisturizers were calculated. In the results, differences were seen between M-1 and M-2, and also between liquid type and jelly type. Therefore, it was suggested that the filter paper method might be useful for evaluating the commercial oral moisturizers in regard to water retaining capability.