The present invention relates to a cosmetic water-in-oil microemulsion having good fluidity, i) 20 to 40% w / w of an oil phase component having a diffusion value of 1700 mm 2/10 min or more, ii) a diffusion value of 1000 to 1700 mm 2 / 15-35% w / w of oil phase component for 10 minutes, iii) 1-15% w / w of oil phase component of 500-999 mm 2/10 minutes, iv) Diffusion value of less than 500 mm 2/10 minutes 0 to 10% w / w of the oil phase component, v) fatty acid ester of glycerol or polyglycerol 5 to 30% w / w, viii) water, auxiliary surfactant, optionally co-solvent, cosmetic activity Ingredients, skin care ingredients, water-soluble plant extracts and cosmetic auxiliary ingredients 5-20% w / w. [Selection diagram] Fig. 1本発明は、流動性の良い化粧用の油中水マイクロエマルションに関し、ｉ）拡散値が１７００ｍｍ２／１０分以上の油相成分の２０～４０％ ｗ／ｗ、ｉｉ）拡散値が１０００～１７００ｍｍ２／１０分の油相成分の１５～３５％ ｗ／ｗ、ｉｉｉ）拡散値が５００～９９９ｍｍ２／１０分の油相成分の１～１５％ ｗ／ｗ、ｉｖ）拡散値が５００ｍｍ２／１０分未満の油相成分の０～１０％ ｗ／ｗ、ｖ）グリセロールの脂肪酸エステルやポリグリセロールの脂肪酸エステル５～３０％ ｗ／ｗ、ｖｉｉｉ）水、補助界面活性剤、選択的に、共溶媒、化粧品活性成分、スキンケア成分、水溶性植物抽出物および化粧品補助成分５～２０％ ｗ／ｗを含む。【選択図】 図１
