| abstract |
PROBLEM TO BE SOLVED: To provide a water-in-oil type emulsifier-free fine dispersion system which can be used for cosmetics or dermatological preparations. SOLUTION: (1) Oil phase, (2) Water phase, (3) (A) having an average particle size of less than 200 nm, (b) exhibiting both hydrophilic and lipophilic properties, ie having amphipathic properties, being dispersible in both water and oil, and (c) At least one fine particle, optionally coated on the surface, comprising (4) at least one hydrocolloid and (5) at most 0.5% by weight of one or more emulsifiers, Pickering emulsion which is a water-in-oil type fine dispersion system. |