PURPOSE: An external use skin composition for skin whitening is provided to suppress melanin activity without skin irritation and remove keratin. CONSTITUTION: A method for manufacturing an external use skin composition comprises: a step of mixing green tea leaves, Artemisia capillaris Thunb and salt and fermenting for 6-12 months; a step of repeating fermentation and extraction to obtain fermentation extract of green tea and Artemisia capillaris Thunb; a step of adding 30-50 weight parts of Phellinus yucatensis and 20-30 weight parts of Cnidii Rhizoma and heating for 1-3 hours; a step of filtering to obtain a first additive; and a step of adding the first additive to the fermentation extract and fermenting for 6-12 months. A mask pack is obtained by immersing the composition in a mask pack.본 발명은 녹차잎 0.3~1중량부와 인진쑥 0.5~1.5중량부 및 소금 1~2.5중량부를 혼합하여서 6~12개월간 발효 숙성시켜 추출하는 과정을 반복하여서 미백용 피부 미용 조성물을 얻음으로서, 피부에 자극이 거의 없으며, 미백효과가 우수하며, 여드름치료와 각질제거 및 잔주름 제거효과가 있다.