The Olaplex 3-4-5-6 system is an at home system that contains the same active ingredient found in all professional Olaplex products. The 3-4-5-6 system includes Olaplex No. 3 Hair Perfector for weekly treatment, Olaplex No. 4 Bond Maintenance Shampoo, Olaplex No. 5 Bond Maintenance Conditioner + Olaplex No. 6 Bond Smoother. The patented technology relinks the broken disulfide bonds in every type of hair providing real, structural repair that works from within.