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The structure of the surfactant mol. determines the surfactant's functionality.The authors studied the dimethicone copolyol surfactant mol. with five different weight percentages of silicone and both with and without an added fatty group.They observed the effect of these structural changes on the mol.'s solubility and on the emulsion stability in six different emulsion types.Then they compared the observed effects with those predicted by 3D-HLB theory.They conclude that the 3D-HLB system can make predictions that will improve the efficiency with which emulsifiers are engineered and complex emulsions are formulated.

Cosmetics & Toiletries

Amino silicone polymers as hair softeners and conditioners

Author: O'Lenick, Anthony J. Jr. ; Sitbon, Catherine Suserman

A review with no referencesAmodimethicone, a silicone emulsion, has been used successfully as a hair softener and conditioner.The fact that the product is made by emulsion polymerization, however, limits its use in a wide variety of formulations.Recently, a new series of amino-containing compounds has been prepared that offer formulation and performance advantages as a substitute for amodimethicone; this article addresses the differences between the two types of amino silicones.

Journal of Cosmetic Science

Skin irritation potential of quaternaries. Comments

Author: O'lenick, Anthony J. Jr.

A polemic to M.M. Rieger (ibid, 48, 307-317, 1997).Silicone complexes of quats, eye irritation, and silicone phosphates with Na lauryl sulfate are discussed.

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