PURPOSE: A cosmetic composition containing Broussonetia kazinoki Sieb extract is provided to improve anti-aging and to enhance skin elasticity. CONSTITUTION: A cosmetic composition for anti-aging contains Broussonetia kazinoki Sieb extract as an active ingredient. A cosmetic composition for skin elasticity and anti-aging contains the extract as an active ingredient. The extract is contained in 0.001-50 wt% of based on total weight of the composition. A method for preparing the extract comprises: a step of drying and slicing Broussonetia kazinoki Sieb； a step of extracting Broussonetia kazinoki Sieb using polar solvent, non-polar solvent, and mixture solvent thereof.본 발명은 항노화용 화장료 조성물에 관한 것으로, 보다 상세하게는 닥나무 추출물을 유효성분으로 함유하여 피부 주름을 개선하는 등 피부 노화 현상을 개선하는데 효과적이며 또한 피부 탄력 증진 효과가 우수한 화장료 조성물에 관한 것이다.
