Ingredient Profile: Distearyldimethylammonium Chloride

By: Mike Fevola, Johnson & Johnson

Posted: February 3, 2011, from the February 2011 issue of Cosmetics & Toiletries.

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O/W emulsions comprising DSDMAC can be prepared by either “one-pot” or two-phase processes. In the one-pot process, the emulsion is formed by dispersing the DSDMAC, fatty alcohols, specified emollients, and glycerin in water at 82–87°C with sufficient agitation to form a homogeneous mixture, which is then cooled by adding additional water with increasing agitation.⁹ The two-phase process involves heating an oil phase comprising DSDMAC, fatty alcohols and specified emollients to 75–80 °C, then dispersing it into an aqueous phase comprising water and humectants, e.g. glycerin, at the same temperature. Once formed, the o/w emulsion is homogenized until uniform and cooled under gentle stirring.¹⁰

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References
Send e-mail to CT_author@allured.com.
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