| 摘要 |
PURPOSE:To obtain an O/W/O-type multi-phase emulsion cosmetic having improved storage stability, safety to skin and practical characteristics, by compounding a specific bentonite to an aqueous phase component of an intermediate layer and a dextrin fatty acid ester to the outermost oil phase component. CONSTITUTION:An O/W-type emulsion is produced by dispersing and emulsifying (A) an oily solution composed of an oily substance and a lipophilic surfactant in (B) an aqueous phase component composed of an aqueous dispersion of a bentonite having a cation-exchanging sodium ion content of >=100mg-equivalent/100g and preferably having a viscosity of 150-800cps as 4wt% aqueous dispersion. The obtained emulsion is dispersed and emulsified in (C) an oily phase component composed of a dextrin fatty acid ester, an oily substance and a lipophilic surfactant to obtain the objective multi-phase emulsion cosmetic having excellent storage stability, safety to skin and practical characteristics (spreadability, viscosity, moisture-retainability and water-resistance) and exhibiting an O/W/O-type dispersion state. Further improved various characteristics can be attained by adding xanthan gum to the above aqueous phase component. |
