PURPOSE: An external use skin composition containing extract of Broussonetia kazinoki Sieb fruits and flowers is provided to suppress melanogenesis and to ensure skin whitening effect.CONSTITUTION: An external use skin composition for skin whitening contains 0.0001-50.0 wt% of extract of Broussonetia kazinoki Sieb flowers and fruits as an active ingredient. The extract is prepared by drying by sun light or hot wind and isolating with water or ethanol. The composition is manufactured in the form of a solution, gel, solid, emulsion, suspension, microemulsion, microcapsule, cream, skin, lotion, ointment, spray, or pack.COPYRIGHT KIPO 2012본 발명은 닥나무의 꽃과 열매 추출물을 함유하는 피부 외용제 조성물에 관한 것으로, 보다 상세하게는 닥나무의 꽃과 열매로부터 얻은 추출물을 유효성분으로 함유하여 멜라닌 생성을 효과적으로 억제함으로써 우수한 피부 미백 효과를 나타내는 피부 외용제 조성물에 관한 것이다.