The purpose of the present invention is to provide a nail cosmetic which has excellent adhesive properties and excellent peelability and to provide a nail art kit that includes said nail cosmetic. This nail cosmetic is characterized by containing as a component 1 diacetone acrylamide and as a component 2 at least one compound selected from the group consisting of isobornyl methacrylate hydroxyethyl acrylamide methacrylamide dimethyl acrylamide diethyl acrylamide acryloylmorpholine and butoxy diethylene glycol methacrylate.