A solution containing a C70 cyclodextrin complex and a solution containing a lipid that is capable of forming a liposome are mixed together at a temperature in a range of 10° C. to 45° C. This produces a C70-incorporated liposome which keeps a physical property that the C70 fullerene originally has, and is stably solubilized in a polar solvent. Hence, the present invention provides a C70-incorporated liposome which keeps a physical property that the C70 fullerene originally has, and which is stably solubilized in a polar solvent, a production method of the same, and a use of the same.
