| abstract |
[Problem] To provide an inclusion body capable of efficiently solubilizing poorly water-soluble components and a skin external preparation containing the inclusion body and having excellent usability. A polymer obtained by polymerizing a polyethylene oxide macromonomer (for example, polyethylene oxide acrylate, methacrylate, etc.), a hydrophobic monomer (for example, methyl methacrylate, butyl methacrylate, etc.) and a crosslinking monomer (for example, ethylene glycol dimethacrylate, etc.). A clathrate comprising a poorly water-soluble component clathrated in a copolymer, and a skin external preparation containing the clathrate. [Selection figure] None |