The present invention relates to a skin-brightening cosmetic composition using natural ingredients for extending the storage and usage period of a skin-brightening cosmetic product and the skin-brightening cosmetic product including the same. In order to prepare the skin-brightening cosmetic composition, a predetermined blending ratio is used to mix a Ginkgo biloba leaf extract, a Chenopodium album extract, a purple sweet potato extract, an Agrimonia pilosa extract, a cacao extract, an Ulmus macrocarpa peel extract, and a fermented red ginseng extract, thereby realizing the skin protection and skin-brightening effects using the pharmacological effects of the natural extracts. For enhancing the skin-brightening effects, the skin-brightening cosmetic composition additionally includes: a first mixture prepared by mixing a Codium fragile extract, an Enteromorpha linza extract, a rotus root extract, and a Plantago ovata extract； a second mixture prepared by mixing a Holothuroidea extract, a persimmon leaf extract, a Smilax china extract, and a Cladonia rangiferina flower extract； a third mixture prepared by mixing a Polygonum multiflorum extract, a mushroom extract, a Saxifraga stolonifera extract, and a Salvia plebeia extract； and a fourth mixture prepared by mixing an Angelica gigas extract, an Ardisia japonica extract, a Momordica charantia extract, a tea tree extract, and an Angelica keiskei extract. The skin-brightening cosmetic composition can also include a Zanthoxylum piperitum extract, a Bryophyta extract, a Pulsatilla koreana extract, and a grapefruit seed extract.본 발명은 은행잎 추출물, 명아주 추출물, 자색 고구마 추출물, 선학초 추출물, 카카오 추출물, 왕느릅나무껍질 추출물, 발효홍삼 추출물을 일정 배합비로 혼합 조성함으로써, 천연추출물의 약리 효과에 의한 피부 보호 및 미백 효과를 갖고,또한 청각 추출물, 잎파래 추출물, 연뿌리 추출물, 차전초 추출물을 혼합하여 조성한 제1혼합물； 해삼 추출물, 감잎 추출물, 토복령 추출물, 승마꽃 추출물을 혼합하여 조성한 제2혼합물； 적하수오 추출물, 버섯 추출물, 바위취 추출물, 곰보배추 추출물을 혼합하여 조성한 제3혼합물； 참당귀 추출물, 자금우 추출물, 여주 추출물, 티트리 추출물, 신선초 추출물을 혼합하여 조성한 제4혼합물；을 더 부가하여 첨가함으로써 미백 기능을 더욱 강화하고,그리고 산초 추출물, 이끼 추출물, 백두
