Problem: it is excellent in antibacterial and antifungal properties, excellent in coating, solidification, safety and stability, and has a high curing quality and high photocurability, and can be easily applied to and removed from the nail cosmetic, which is suitable for use in thin or thick coating, and has good gloss and durability obtained from the nail makeup Provide nails, gel nail, nail seal and nail tip."Quaternary ammonium salt (a)" having an unsaturated group and / or an oligomeric nail cosmetic characterized by containing the oligomer and polymer.【課題】抗菌性、防カビ性に優れ、塗布性、固化性、安全性及び保存安定性が良好であり、光硬化型の光硬化性が高く、薄塗りでも厚塗りでも好適に用いられる爪化粧料と、該爪化粧料から得られる良好な光沢性と耐久性を有し、容易に補修、除去できるネイル、ジェルネイル、ネイルシールとネイルチップを提供すること。【解決手段】不飽和基を有する第四級アンモニウム塩（Ａ）及び／又はそのオリゴマー、ポリマーを含有することを特徴とする抗菌性爪化粧料。
