PROBLEM TO BE SOLVED: To provide drug solution for wet tissue and wet tissue which do not contain paraben and have excellent takeout smoothness regardless of larger content of water than conventional products.SOLUTION: There is provided drug solution for wet tissue which does not contain paraben, and in which a product of the film thickness of the drug solution and the surface tension of the drug solution measured by the following measuring method is 810 (μm mN/m) or more. As a film thickness measuring method of the drug solution, after dripping 0.03 ml of the drug solution onto a preparation, another preparation having the same size is silently placed and laminated on the preparation. After the preparations are left to stand for 30 seconds, the preparations are observed in a magnified manner by a microscope from an immediate lateral direction, and the film thickness of the drug solution interposed between the preparations is measured.COPYRIGHT: (C)2014,JPO&INPIT【課題】パラベンを含有せず、従来よりも水の含有量が多いにも関わらず、良好な取り出し性が得られるウェットティッシュ用薬液及びウェットティッシュを提供すること。【解決手段】パラベンを含有しないウェットティッシュ用薬液であって、下記測定方法により測定された前記薬液の膜厚と、前記薬液の表面張力の積が、810(μm・mN/m)以上であるウェットティッシュ用薬液である。薬液の膜厚測定方法としては、先ず、0.03mlの薬液をプレパラート上に滴下した後、その上にもう1枚同じ大きさのプレパラートを静かに置いて重ねる。そのまま放置して30秒間経過した後、真横から顕微鏡で拡大観察し、プレパラート間に介在する薬液の膜厚を測定する。【選択図】図3