Abstract: A composition for strengthening a skin barrier or moisturizing skin is provided. The composition includes tilianin. The composition may be a food, a health functional food composition, a quasi-drug composition and/or a composition for external use on the skin. The composition increases the contents of moisture and hyaluronic acid in the skin and exhibits an upregulating effect on HAS. A method for strengthening a skin barrier or enhancing skin moisture using tilianin, and provides a use of tilianin in the preparation of food or medicine for strengthening a skin barrier or enhancing skin moisture are also provided.

Abstract: Provided are a method for preventing or treating photoaging of skin, including: administering a composition comprising an effective amount of an extract of Agastache rugosa O Kuntze to a subject in need thereof. The composition decreases expression of matrix metalloproteinases (MMPs) induced by ultraviolet B (UVB) irradiation; decreases expression of mitogen-activated protein kinase (MAPK)/activator protein-1 (AP-1) signaling; improves collagen synthesis; decreases skin inflammation induced by NF-?B; and decreases oxidative stress induced by UVB irradiation.