The present invention provides a silicone-modified wax obtained by subjecting an esterification reaction product obtained from a polyhydric alcohol having one or two alkenyl groups in one molecule and a higher fatty acid, and an organohydrogenpolysiloxane containing at least one methyl group, to a hydrosilylation reaction wherein the silicone-modified wax is solid or in a grease state exhibiting a thixotropy, at 25° C. There can be a silicone-modified wax, a production method thereof, and a composition and a cosmetic preparation each containing the silicone-modified wax, which silicone-modified wax is solid or in a grease state exhibiting a thixotropy, at 25° C., and is high in compatibility with oil-based agents such as volatile and nonvolatile silicone oils, hydrocarbon oils, ester oils, natural animal oils and plant oils, and the like.
