The OLAPLEX Mega Set No. 3 + No. 4 + No. 5 + No. 6 contains:1 x OLAPLEX Hair Perfector No. 3, 100 ml1 x OLAPLEX No. 4 Bond Maintenance Shampoo, 250 ml1 x OLAPLEX No. 5 Bond Maintenance Conditioner, 250 ml1 x OLAPLEX No. 6 Bond Smoother Leave-In Reparative Styling Cream, 100 mlHair Perfector No. 3: OLAPLEX Hair Perfector No. 3 is used weekly between chemical applications to strengthen the hair. Sufficient for at least 15 applications.No. 4 Bond Maintenance Shampoo: OLAPLEX Shampoo, also known as OLAPLEX No. 4, visibly improves hair structure and gives hair incredible shine.No. 5 Bond Maintenance Conditioner: OLAPLEX No. 5 Conditioner repairs and hydrates hair without weighing it down, improving structural damage and reducing split ends. For strong, healthy and shiny hair.No. 6 Bond Smoother Leave-In Reparative Styling Cream: OLAPLEX's leave-in styling cream strengthens and protects hair while moisturizing it. Frizz and flyaway hair are eliminated for up to 72 hours.reduces blow-drying timesuitable for all hair typescontains no sulfates, parabens or gluten100% veganpatented technologyOLAPLEX - an active ingredient that changes everything! The secret weapon of America's top artists for stronger, healthier and shinier hair than ever before. For long-lasting color results and a strengthened and regenerated keratin layer. Protects hair from damage during bleaching and coloring and multiplies and strengthens the structure of the hair. Can be combined with bleaching and coloring products from all manufacturers.