The present invention addresses the problem of providing a stable reverse vesicle composition using lecithin. The means for solving this problem is a reverse vesicle composition comprising a reverse vesicle including lecithin and an oil solution that has a molecular weight greater than 114 g/mol and is liquid at 25 DEG C.提供使用卵磷脂之安定的反囊胞組成物為本發明之課題。解決該課題的手段係一種反囊胞組成物,其含有含卵磷脂的反囊胞、及分子量較114g/mol大之於25℃為液狀之油劑。1‧‧‧二分子膜成分2‧‧‧揮發性溶媒3‧‧‧第1各向同性溶液4‧‧‧油劑2.4‧‧‧一相之溶液5‧‧‧第2各向同性溶液7‧‧‧反囊胞8‧‧‧反囊胞組成物31‧‧‧粒子
