PURPOSE: A cosmetic composition containing octanohydroxamic acid is provided to ensure skin moisturizing and whitening effects, and to be used as various cosmetic ingredients.CONSTITUTION: A cosmetic composition contains 0.01-10 wt% of octanohydroxamic acid. The cosmetic composition further contains one or more selected from the group consisting of a moisturizing agent, vitamin, a UV protection agent, a vegetable-extracted ingredient, an antioxidant, a whitening functional ingredient, an anti-wrinkling ingredient, a peptide, EGF(Epidermal Growth Factor), and a stem cell culture medium. The cosmetic composition also contains vegetable oil, wax esters, hydrocarbons, higher fatty acids, higher fatty alcohols, esters, silicon, a surfactant, a sequestering agent, a coloring agent, a perfume, and water.COPYRIGHT KIPO 2013본 발명은 옥타노하이드록사믹 산(Octanohydroxamic Acid)을 함유하는 화장료 조성물에 관한 것으로, 더욱 상세하게는 옥타노하이드록사믹 산으로 인하여 우수한 항균, 피부 미백 및 피부 보습 기능을 갖는 화장료 조성물에 관한 것이다.상기한 옥타노하이드록사믹 산은 화장료 조성물 총 중량을 기준으로 0.01~10중량%만큼 포함되는 것을 특징으로 한다.