A novel pigment-containing aliphatic polyester resin fine particle having a pigment (C) content of 1.5% by mass or more and 40% by mass or less and an average particle diameter of 1 μm or more and less than 100 μm, which is obtained by: It is selected from the group consisting of an aliphatic polyester obtained from an aliphatic hydroxycarboxylic acid, an aliphatic polyester obtained from an aliphatic dicarboxylic acid and / or an ester-forming derivative thereof, and an aliphatic diol, and a lactone. The aliphatic polyester resin (A) of the obtained group of aliphatic polyesters, a resin (B), a pigment (C), and an organic solvent (D) that are different from the aliphatic polyester resin and induce phase separation are added. When mixed to prepare a polymer solution, in a two-phase system in which the phase separation becomes a solution phase containing an aliphatic polyester resin (A) as a main component and containing a pigment, and a solution phase containing the resin (B) as a main component. After the emulsion is formed, it is allowed to contact the poor solvent (E) of the aliphatic polyester resin (A), whereby the aliphatic polyester resin fine particles containing the pigment (C) are precipitated.Provided is a novel polymer fine particle as a color material with high color rendering property, which can rationally improve the fluidity and dispersibility of pigments. When used as a cosmetic additive, it is easy to remove makeup and it is not easy to transfer skin color.一種顏料(C)之含量為1.5質量%以上40質量%以下且平均粒徑為1μm以上且低於100μm之新穎之含有顏料的脂肪族聚酯樹脂微粒子，其係藉由下述而獲得：將選自包含由脂肪族羥基羧酸所獲得的脂肪族聚酯、由脂肪族二羧酸及/或其酯形成性衍生物與脂肪族二醇所獲得的脂肪族聚酯、及由內酯所獲得的脂肪族聚酯的群組的脂肪族聚酯樹脂(A)、屬不同於脂肪族聚酯樹脂的樹脂且誘發相分離的樹脂(B)、顏料(C)及有機溶劑(D)加以混合而作成聚合物溶液時，於相分離成為以脂肪族聚酯樹脂(A)為主成分且包含顏料的溶液相、及以前述樹脂(B)為主成分的溶液相之2相的系統中，使乳劑形成後，使接觸脂肪族聚酯樹脂(A)的不良溶劑(E)，藉此使含有顏料(C)的脂肪族聚酯樹脂微粒子析出。提供一種作為顯色性高的色材之新穎聚合物微粒子，其可使顏料之流動性、分散性等之處理性提升，使用作為化妝品添加劑時，容易卸妝，且不易對皮膚顏色轉移。
