The present invention addresses the problem of providing a beautiful-skin-promoting agent for improving skin conditions such as dry skin, loss of elasticity, and chapped skin and/or for promoting beautiful skin； an oral composition for promoting beautiful skin containing the beautiful skin-promoting agent； and a beautifying method for improving skin condition and/or promoting beautiful skin. Provided is a beautiful skin-promoting agent that contains as an active ingredient one or a combination of two or more types selected from the group consisting of collagen peptides and blood flow-improving agents； especially camellia seed extract, thioctic acids, resveratrols, and plant extracts containing resveratrols, as well as an oral composition containing the beautiful-skin-promoting agent, and a method for oral intake of the beautiful-skin-promoting agent or the composition.本發明之問題在於提供一種美膚促進劑、經口用組成物及美容方法，該美膚促進劑係用以改善皮膚乾燥、彈力降低、皮膚粗糙等皮膚狀態、及/或促進美膚，該經口用組成物係用以促進美膚且其是調配該美膚促進劑而成，該美容方法係用以改善皮膚狀態、及/或促進美膚。本發明提供一種美膚促進劑、經口用組成物或方法，該美膚促進劑係含有由膠原蛋白胜肽與血流改善劑所構成之併用物來作為有效成分，該血流改善劑尤其是從由山茶籽萃取物、硫辛酸類、白藜蘆醇類及含有前述白藜蘆醇類之植物萃取物所構成之群組中選出之1種或2種以上，該經口用組成物係調配前述美膚促進劑而成，該方法係經口攝取前述美膚促進劑或前述經口用組成物。
