AnIxora parvifloraleaf extract of which the absorption spectroscopy includes peaks within the following wave ranges: from 210 to 250 nm, from 260 to 290 nm, and from 300 to 350 nm. The extract is useful for anti-oxidation, inhibiting the activity of matrix metalloproteinase (MMP), inhibiting the expression of matrix metalloproteinase, and/or promoting the expression of collagen.一種白仙丹葉萃取物,其吸收光譜係包含以下波長範圍之吸收峰:210至250奈米、260至290奈米、及300至350奈米,該萃取物可用於抗氧化、抑制基質金屬蛋白酶活性、抑制基質金屬蛋白酶生成、及/或促進膠原蛋白生成。