Compositions, kits and regimens for the treatment of skin, especially décolletage

A kit comprising:

• a first container containing a first composition comprising a retinoid and a dermatologically or pharmaceutically acceptable carrier,
• a second container containing a second composition comprising a hydroquinone and a dermatologically or pharmaceutically acceptable carrier,
• a third container containing a third composition comprising a multi-metal complex and a dermatologically or pharmaceutically acceptable carrier wherein the multi-metal complex comprises a central unit, wherein the central unit is derived from at least one compound selected from polycarboxylic acids and amino acids having at least two carboxylic acid groups and the center unit bridges one or more copper molecules and one or more zinc molecules by coordinate bonding,
• the first, second and third containers being enclosed within a common outer packaging, and
• instructions directing a user to apply each of the first, second and third compositions to a non-facial area of the skin of a user.