Research on Leave-on Cosmetics Using Monosaccharide Sugar Alcohols

Abstract

Sugar alcohols in the raw ingredients for cosmetics are recognized as moisturizers for skin and hair care. While some sugar alcohols, such as sorbitol and xylitol, are widely used, there is far less use made of sugar alcohols than polyhydric alcohols (e.g., glycerin) with similar molecular structures. This study focuses on monosaccharide sugar alcohols to verify their texture and moisturizing properties, which are regarded as important in leave-on cosmetics. Using experimental skin lotion with different monosaccharide sugar alcohols or with glycerin as a comparison target, first, texture was evaluated by sensory evaluations and by measurement with instruments. Monosac-charide sugar alcohols showed different results from glycerin for texture items such as brake sensation immediately before drying, no stickiness after drying, refreshment, and moisture. There was also considerable variation between the different monosaccharide sugar alcohols. Next, stratum corneum moisture content was measured, and variation in moisturizing ability between the different monosaccharide sugar alcohols was confirmed. Of notable interest are the differences in texture and moisturizing properties found between formulations even when the components had similar molecular structures. Based on the results of this study, the use of different monosaccharide sugar alcohols to suit the various product concepts of leave-on cosmetics is expected to make a significant contribution to product design.