Disclosed is a cosmetic composition comprising prenylated isoflavonoid and a carrier, wherein the prenylated isoflavonoid is from about 0.0000001% to about 10%, preferably from 0.00001% to 1%, most preferably from 0.01% to 1%, by weight, based on the total weight of the composition. The active agent prenylated isoflavonoid induces a statistically significant upregulation of collagen 1A1 and elastin genes in normal human dermal fibroblasts. The composition is effective to stimulate the production of collagen and elastin and improve the appearance and condition of the skin.