A composition for cosmetic preparation and a cosmetic preparation including the composition are provided. The composition includes a silicone-modified wax having a melting point of 100° C. or above and an unctuous agent having a melting point of 80° C. or below. The composition is prepared by cooling after dissolving and mixing the silicone-modified wax and the unctuous agent at temperature equal to or higher than the melting point of the silicone-modified wax. The composition has a smooth feel and a glossy surface and can be blended in a cosmetic preparation without being heated at 100° C. or above.