Olpalex Hair Repair Treatment Kit reduces hair damage, breakage and split ends to make hair visibly stronger. This kit consists of 4 products- No.0 Intensive Bond Building Treatment rebuilds hair bonds, strengthens, and protects hair integrity, No.3 Hair Perfector restores hair’s healthy appearance and texture by repairing damage and protecting hair structure, Olaplex No.4 Bond Maintenance Shampoo repairs, strengthens, and nourishes all hair types, and Olaplex No.5 Bond Maintenance Conditioner is a highly-moisturizing, reparative conditioner for all hair types.