Shaping keratin fibres using an amine or a diamine

A crosslinking composition for shaping keratin fibres comprising:

• an active agent, wherein the active agent is an amine or diamine;
• wherein the active agent has at least two functional groups selected from the group consisting of:
• —NH2, —NH—, —SH, —OH, —C(═O)H, —C═O, and —COOH;
• and wherein the active agent has a molecular weight of about 300 g/mol or less;
• a photocatalyst being a hydroxy-substituted aromatic compound, wherein the hydroxy-substituted aromatic compound is multicyclic.

A process for forming a crosslinking composition, comprising mixing together:

• (a) an active agent, wherein the active agent is an amine or diamine;
• wherein the active agent has at least two functional groups selected from the group consisting of:
• —NH2, —NH—, —SH, —OH, —C(═O)H, —C═O, and —COOH;
• and wherein the active agent has a molecular weight of about 300 g/mol or less;
• and
• (b) a photocatalyst being a hydroxy-substituted aromatic compound;
• and
• (c) a cosmetically acceptable carrier.