| abstract |
[Problem] To provide an agent for promoting collagen production, such as an external preparation for skin or a composition for oral cavity that promotes collagen regeneration of gingiva, which is effective in preventing wrinkles and talmi of the skin accompanying aging. A collagen production promoter comprising a compound represented by the following general formula (I) or a salt thereof: [Chemical formula 5] (In the formula, three dotted lines represent two single bonds and one double bond.) [Selection figure] None |