Dipentaerythrityl hexahydroxystearate/isostearate is a mixture of different esterified fatty acid derivatives (stearic acid/isostearic acid) which is used in cosmetic formulations. The solid acid ester mixture acts as an emulsifier (changes the interfacial tension of liquids like water and oil so that they can be mixed together). Furthermore it has a smoothing effect on the skin surface.
Dipentaerythrityl hexahydroxystearate/isostearate contains pentaerythritol as alcohol component.