PROBLEM TO BE SOLVED: To provide a foundation cosmetic, which is a foundation cosmetic containing hyaluronic acid and/or a salt thereof, not generating spots or color unevenness, even when a powder foundation is applied thereto after the foundation cosmetic is applied.SOLUTION: A foundation cosmetic includes following components (A), (B) and (C): (A) 0.05-5 mass% crosslinkable type dimethylpolysiloxane and/or crosslinkable type alkylpolysiloxane, (B) 0.01-2 mass% alkyl-modified silicone represented by general formula (in the formula, R shows a 6-24C alkyl group, and a and b each denotes a number of 50-1,000), and (C) 0.001-0.2 mass% hyaluronic acid and/or a salt thereof, wherein the mass ratio between the components (A) and (C) satisfies equation: (A)/(C)=0.5-100, and the mass ratio between the components (B) and (C) satisfies equation: (B)/(C)=1-60.COPYRIGHT: (C)2014,JPO&INPIT【課題】ヒアルロン酸及び/又はその塩を含有する下地化粧料であって、塗布後、パウダーファンデーションを塗布しても、まだらにならず、色ムラにならない下地化粧料の提供。【解決手段】次の成分(A)、(B)及び(C):(A)架橋型ジメチルポリシロキサン及び/又は架橋型アルキルポリシロキサン:0.05~5質量%、(B)一般式(式中、Rは炭素数6~24のアルキル基を示し、a及びbはそれぞれ50~1000の数を示す)で表されるアルキル変性シリコーン:0.01~2質量%、(C)ヒアルロン酸及び/又はその塩:0.001~0.2質量%を含有し、成分(A)及び(C)の質量割合が、(A)/(C)=0.5~100、成分(B)及び(C)の質量割合が、(B)/(C)=1~60である下地化粧料。【選択図】なし