PROBLEM TO BE SOLVED: To provide a cosmetic which does not cause creases even if containing a hydrophilic thickener, and have a refreshed feeling of use, in a mildly acidic cosmetic.SOLUTION: The invention provides: a thickener for a mildly acidic cosmetic, obtained by polymerizing a water-soluble unsaturated carboxylic acid monomer under the presence of a water-soluble crosslinker, and containing resin particles with a degree of neutralization of 50% or less and a median particle diameter of 5-30 μm and the mildly acidic cosmetic containing the thickener.COPYRIGHT: (C)2015,JPO&INPIT【課題】弱酸性化粧料において、親水性増粘剤を配合してもヨレの発生がなく、さっぱりした軽い使用感の化粧料を提供すること。【解決手段】水溶性架橋剤の存在下に水溶性不飽和カルボン酸単量体を重合して得られる、中和度50%以下且つ中位粒子径が5~30μmの樹脂粒子を配合してなる弱酸性化粧料用増粘剤、及び当該増粘剤を含有する弱酸性化粧料。【選択図】なし
