| abstract |
(57) 【Abstract】 PROBLEM TO BE SOLVED: To stably contain a water-soluble or hydrophobic polymer or chain-like substance, and to mix it with a powder-based base material, which has high biocompatibility and skin. To provide a highly safe external preparation for skin. A water-soluble polymer or a water-soluble chain substance, or a hydrophobic polymer or a hydrophobic chain substance and a polyrotaxane formed from cyclodextrin are contained. Examples of the water-soluble polymer or chain substance include polyethylene glycol, polypropylene glycol, peptides, etc., and examples of the hydrophobic polymer or chain substance include hydrocarbons such as squalane, oil-soluble vitamins, prostaglandins and the like. Can be mentioned. Anti-inflammatory agents, water-soluble vitamins, pigments, ultraviolet absorbers, etc. can be introduced into these. |