POROUS SILICA WITH PENTAERYTHRITOL DERIVATIVES AND WATER

摘要

A composite powder, and a cosmetic composition containing the composite powder are provided to improve water content, moisturizing effect and moisturizing power keeping effect. A composite powder comprises porous silica; and a mixture of a pentaerythritol derivative and water which is adsorbed to and trapped in the porous silica. Preferably the mixture comprises further a C16-C22 alcohol; and/or glycerin. Preferably the pentaerythritol derivative is represented by the formula 1, wherein R is independently identical or different one another and is H, or a C1-C24 saturated or unsaturated and linear or branched alkyl group containing or not containing a hydroxyl group; m is identical or different one another and is an integer of 0-10; and n is identical or different one another and is an integer of 1-10.