An object of the present invention is to provide a nail cosmetic material having excellent adhesiveness and peelability, and a nail art kit containing the nail cosmetic material.The nail cosmetic material of the present invention including: diacetone acrylamide as a component 1 and at least one compound selected from the group consisting of isobornyl methacrylate, hydroxyethyl acrylamide, methacrylamide, dimethyl acrylamide, diethyl acrylamide, acryloyl morpholine, and butoxy diethylene glycol methacrylate, as a component 2.