This oily moisturizer is composed of either an esterified product of a component A that is ditrimethylolpropane, and a component B that is one fatty acid, or two or more fatty acids, selected from among saturated fatty acids of 6 to 12 carbon atoms, or an esterified product of the component A, the component B, and a component C that is one fatty acid, or two or more fatty acids, selected from among fatty acids of 13 to 28 carbon atoms, wherein the hydroxyl value of the esterified product is not more than 140 mgKOH/g, and the mass ratio between fatty acid residues derived from the component B and fatty acid residues derived from the component C within the fatty acid residues that constitute the esterified product of the component A, the component B and the component C is within a range from 99.9:0.1 to 60:40.
