National Starch and Chemical Investment Holding Corporation

Donna L Ronco

Daniel B Solarek

Joseph Pasapane

Robert L Billmers

Roger Jeffcoat

Douglas J Hanchett

Maria Tolchinsky

Thermally-inhibited starches and flours are used in cosmetic compositions such as skin and hair care products as emulsifiers, thickeners, and aesthetic control agents. The starch or flour is inhibited by dehydrating the starch or flour to anhydrous or substantially anhydrous and then heat treating the dehydrated starch or flour for a time and at a temperature sufficient to inhibit the starch or flour and improve its viscosity stability when dispersed in water. The dehydration may be a thermal or a non-thermal dehydration (e.g., by alcohol extraction or freeze-drying). Preferably, the pH of the starch or flour is adjusted to a neutral or above (e.g., pH 8-9.5) prior to the dehydration and heat treatment.

Cosmetics containing thermally-inhibited starches

Cosmetic compositions useful in skin care are provided containing an effective aesthetic enhancing amount of calcium salt starch derivatives having the following formula: ##STR1## where ST is the starch base material, R is a dimethylene group and R' is a substituent hydrocarbon group having 10 to 16 carbon atoms.

Cosmetic compositions containing hydrophobic starch derivatives

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Oxford, NJ, United States of America

Donna L Ronco