PROBLEM TO BE SOLVED: To provide a hair cosmetic that has a good feeling in use, and also inhibits moisture transpiration to give a moist feeling.SOLUTION: The present invention provides a moisture transpiration inhibitor comprising a specific C18 saturated fatty acid ester, and a hair cosmetic comprising the same.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2017,JPO&INPIT【課題】 良好な使用感に加え、水分蒸散を抑制してしっとり感を与える毛髪化粧料を提供することを目的とする。【解決手段】 特定のC18飽和脂肪酸エステルを含む水分蒸散抑制剤およびこれを含む毛髪化粧料。【選択図】図1