PROBLEM TO BE SOLVED: To provide a new and useful lymph lumen formation promoter, a lymphatic vessel endothelial cell proliferation promoter, or an agent which is effective in improvement of swelling or wrinkles.SOLUTION: This invention relates to a lymph lumen formation promoter, a lymphatic vessel endothelial cell proliferation promoter, or a swelling ameliorating agent, a wrinkle ameliorating agent or an external preparation composition, which contain an extract from Centaurea cyanus L. as an active ingredient. The extract from Centaurea cyanus L. is produced by using preferably a flower, a capitulum or a petal of Centaurea cyanus L., and by using water, methanol, ethanol, propyl alcohol or the like as an extraction solvent.COPYRIGHT: (C)2013,JPO&INPIT【課題】新規で有用なリンパ管腔形成促進剤、リンパ管内皮細胞増殖促進剤、又は、むくみやしわの改善に有効なものを提供すること。【解決手段】ヤグルマギク抽出物を有効成分とする、リンパ管腔形成促進剤、リンパ管内皮細胞増殖促進剤、又は、むくみ改善剤、しわ改善剤又は外用剤組成物。ヤグルマギク抽出物は、好ましくはヤグルマギク(Centaurea cyanus L.)の花、頭花、花弁を用い、抽出溶媒として、水、メタノール、エタノール、プロピルアルコール等を用いて製造する。【選択図】なし