The present disclosure relates to hair care compositions such as hair restructuring compositions comprising a combination of restructuring components. The compositions are unique because they dramatically improve the quality and durability of hair, especially chemically treated hair. Typically, the compositions include: (a) one or more amines selected from the group consisting of diamines, polyamines, alkylamines, alkanolamines, and mixtures thereof (b) one or more unsaturated carboxylic acids of formula (I):wherein R1 is a linear or branched C2-C10 alkenyl group R2 is a linear or branched C1-C10 alkyl group and R3 is (meth)acryloyloxy and (c) a cosmetically acceptable carrier.
