The present invention provides a curable resin composition comprising the following components (A) to (E), which is excellent in adhesion to nails or curable reactivity, and the cured product having certain flexibility and therefore having an excellent followability to nails, whereby it is capable of forming a coating for the purpose of protecting or decorating nails. (A) 100 parts by mass of a compound having urethane structure in the molecule and having acrylic functional groups on both end of the molecular chain； (B) 1 to 35 parts by mass of tri-functional acrylic functional compound with a specific structure； (C) 15 to 75 parts by mass of a acrylic functional group-containing compound having an aliphatic ring structure； (D) 1 to 35 parts by mass of a acrylic functional group-containing compound having an aliphatic chain structure； (E) 0.5 to 13.5 parts by mass of photo polymerization initiator.本發明係由於使用含有下列(A)至(E)之構成而成的硬化性樹脂組成物，因此對指甲之接著性或硬化反應性優異，同時硬化物具備某種程度之柔軟性，因此可形成對於指甲之追隨性良好之以指甲之保護、裝飾等為目的之披覆。(A)於分子內具有胺基甲酸酯結構，於分子鏈兩末端含有丙烯酸官能基之化合物100質量份；(B)特定結構之三官能丙烯酸官能性化合物1至35質量份；(C)具有脂肪族環狀結構之含有丙烯酸官能基的化合物15至75質量份；(D)具有脂肪族鏈狀結構之含有丙烯酸官能基的化合物1至35質量份；(E)光聚合起始劑0.5至13.5質量份。
