PURPOSE: A composition for skin-protection from ultraviolet rays containing a compound extracted from Eisenia bicyclis extracts is provided to have protective action on photoaging or photodamaging of skin due to the ultraviolet rays by the direct suppression of the production of active oxygen.CONSTITUTION: A pharmaceutical composition for treating the photoaging or photodamaging of skin due to ultraviolet rays comprises one of eckol compounds or pharmaceutically acceptable salt thereof. The compound of the composition is extracted from Eisenia bicyclis. The pharmaceutical composition for treating the photoaging or photodamaging of skin due to the ultraviolet rays comprises Eisenia bicyclis extracts. The cosmetic composition for reducing the photoaging or photodamaging of skin due to the ultraviolet rays comprises one of eckol compounds or pharmaceutically acceptable salt thereof.COPYRIGHT KIPO 2013본 발명은 대황 추출물 또는 이로부터 분리된 엑콜계 화합물을 유효성분으로 포함하며, 단일항산소(singlet oxygen, 1O2)와 같은 활성산소의 생성을 직접적으로 억제함으로써 자외선에 의한 피부의 광노화 또는 광손상에 대한 보호작용을 가지 조성물에 관한 것이다.
