<;P>;PROBLEM TO BE SOLVED: To provide a moisturizer which is a structural composition excellent in performances of improving barrier function and retaining epidermal moisture, and an external preparation for the skin containing the same. <;P>;SOLUTION: The moisturizer is the structural composition prepared from a branched fatty acid phytosteryl ester, one or more 10-22C fatty acids, one or more fatty acid triglycerides, squalane, beeswax and jojoba oil and is excellent in performances of retaining epidermal moisture and improved in barrier function. The moisturizer is compounded with the external preparation for the skin to enable drastic improvement of water-retention property and maintenance of healthy skin condition. <;P>;COPYRIGHT: (C)2010,JPO&INPIT