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SYNOPSIS: In this study, we investigated the properties of three different liquid crystal-type humectants prepared through a simple emulsion process. Under a polarized microscope, we observed liquid crystal textures for each of the three moisturizers. When we applied them onto the hands and face, we found that they all provided effective hydration, with pheohydrane/liquid crystal moisturizer exhibiting superior performance. We also investigated the surface properties (contact angle, zeta potential, surface tension, transmission electron microscopy and scanning electron microscopy analyses) after adding pheohydrane to Formula product.
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Tsai et al. (2010) studied this question.
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