PROBLEM TO BE SOLVED: To provide a skin aging inhibitor having pleiotropic effects such as anti-inflammatory, anti-glycation, and moisture retention properties, and a skin external preparation containing the same.SOLUTION: The inventors have completed the invention such that: a skin aging inhibitor contains an inflammation inhibitor or a saccharification inhibitor containing Hydrangea paniculata siebold extract as an active ingredient and a skin external preparation contains the skin aging inhibitor.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2019,JPO&INPIT【課題】 抗炎症性、抗糖化性、保湿性といった多面的な効果を有する皮膚老化防止剤及びそれを含有する皮膚外用剤を提供する。【解決手段】 ノリウツギ抽出物を有効成分とした炎症防止剤または糖化防止剤を含有させることにより皮膚老化防止剤を完成させ、さらに当該皮膚老化防止剤を含有させることにより皮膚外用剤を完成させた。【選択図】図1