PROBLEM TO BE SOLVED: To provide a collagen production promoter which promotes collagen production, and prevents/alleviates phenomena such as aging according to the reduction in collagen, and to provide foods and skin care preparations blended therewith.SOLUTION: The collagen production of a living body is promoted by the blending of the extract of acanthopanax senticosus as an active constituent. If required, by the blending of sweeteners, perfumes, galenical preparation, nutritional supplements or the like, the collagen production of a living body is ingestible as foods, and further, can be administered as skin care preparations by the blending of cosmetics or quasi drugs.
