PROBLEM TO BE SOLVED: To obtain a nail enamel composition having excellent adhesion between a nail surface and a base coat layer. SOLUTION: A nail enamel composition having a cured nail enamel composition having a stress at break of 15.0 MPa or more by a tensile test and a strain rate at break of 95.0% or more by a tensile test. [Selection diagram] Figure 1【課題】爪表面とベースコート層との間の密着性に優れる美爪料組成物を得ること。【解決手段】硬化後の美爪料組成物の引っ張り試験による破断時の応力が15.0MPa以上、かつ引っ張り試験による破断時の歪率が95.0%以上である美爪料組成物。【選択図】図1