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Advantage of Sodium Polyoxyethylene Lauryl Ether Carboxylate as a Mild Cleansing Agent
Author(s) -
Ozawa Toshiaki,
Endo Koji,
Masui Takashi,
Miyaki Masahiro,
Matsuo Keiko,
Yamada Shinji
Publication year - 2016
Publication title -
journal of surfactants and detergents
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.349
H-Index - 48
eISSN - 1558-9293
pISSN - 1097-3958
DOI - 10.1007/s11743-016-1835-6
Subject(s) - chemistry , pulmonary surfactant , sodium dodecyl sulfate , aqueous solution , sodium , adsorption , ether , surface tension , alkyl , carboxylate , denaturation (fissile materials) , chromatography , nuclear chemistry , organic chemistry , biochemistry , physics , quantum mechanics
Five anionic surfactants widely used in commercial skin cleansers were studied: sodium polyoxyethylene lauryl ether carboxylate (EC), sodium polyoxyethylene alkyl ether sulfate (ES), sodium dodecyl sulfate, potassium laurate, and N ‐cocoyl‐ l ‐glutamic acid monosodium salt. The amount of surfactant from aqueous solution adsorbed into the stratum corneum (SC), the degree of SC swelling, the change of the secondary structure of SC proteins (denaturation). The surface tension of surfactant–zein mixed solutions, and the solubilization behavior of zein were measured. Results showed that EC had the lowest adsorption into SC, the lowest SC swelling, and lowest denaturation of SC proteins. Low interactions between surfactants and SC proteins were also observed for EC/ES mixture solutions as well as. Mixing EC with ES good foaming performance. The EC/ES mixture, at about 1:1 ratio, is an excellent surfactant system for skin cleanser applications having cleansing characteristics and mildness to the skin.