The present invention relates to a composition for preventing, improving, or treating inflammatory
disease containing isookanin or a salt thereof as an
active ingredient. The composition containing the isookanin or salt thereof as an
active ingredient according to the present invention has no
skin irritation and
cytotoxicity, and thus has excellent safety for the
human body. In addition, it has excellent effects on the inhibition of JAK1 activity,
kallikrein-5 activity, TLR-2 activation, COX-2 expression and activity,
prostaglandin PGE2 production, and PGE2-induced
angiogenesis, and thus is very effective in preventing, alleviating and treating inflammatory
disease. Accordingly, the composition containing the isookanin or salt thereof as an
active ingredient according to the present invention may be useful as an active ingredient in a cosmetic composition, a pharmaceutical composition, a composition for
skin application and a quasi-
drug composition for preventing, alleviating or treating inflammatory
disease.