PROBLEM TO BE SOLVED: To provide an emulsion composition in which oil as an effective ingredient is applicable to a product without depending on an organic solvent a product having the emulsion composition a method for reducing a content of an organic solvent in an emulsion composition and a method for selecting an emulsion agent.SOLUTION: An emulsion composition contains an aqueous phase, an oil phase containing oil satisfying conditions of expressions (1) and (2), and particles of a polycondensation polymer having closed endoplasmic reticulum formed of an amphiphilic substance which spontaneously forms a closed endoplasmic reticulum or a hydroxyl group, where a mass ratio of a content of an organic solvent being a good solvent to the oil to a content of the oil in the composition is 25 or less (including 0).SELECTED DRAWING: Figure 5COPYRIGHT: (C)2018,JPO&INPIT【課題】有効成分の油について、有機溶媒によらずとも製品に適用可能な乳化組成物、このような乳化組成物を備える製品、乳化組成物中の有機溶媒の含有量を低減させる方法、及び乳化剤の選択方法を提供する。【解決手段】乳化組成物は、水相と、以下の数式(1)及び(2)の条件を満たす油、を含む油相と、自発的に閉鎖小胞体を形成する両親媒性物質により形成された閉鎖小胞体及び/又は水酸基を有する重縮合ポリマーの粒子とを含有し、組成物中の前記油の含有量に対する、該油に対する良溶媒である有機溶媒の含有量の質量比が、25以下(0を含む)である。【選択図】図5
