The OLAPLEX Expert care set contains:1 x OLAPLEX No. 3 Hair Perfector, 100 ml1 x OLAPLEX No. 4 Bond Maintenance Shampoo, 250 ml1 x OLAPLEX No. 5 Bond Maintenance Conditioner, 250 ml1 x OLAPLEX No. 7 Bonding Oil, 30 ml1 x OLAPLEX No. 8 Bond Intense Moisture Mask, 100 mlOLAPLEX No. 3 Hair Perfector: Used weekly between chemical applications to strengthen the hair. Lasts for at least 15 applications.OLAPLEX No. 4 Bond Maintenance Shampoo: Visibly improves hair structure and gives hair incredible shine.OLAPLEX No. 5 Bond Maintenance Conditioner: Repairs and hydrates hair without weighing it down, improving structural damage and reducing split ends. For strong, healthy and shiny hair.OLAPLEX No. 7 Bonding Oil: OLAPLEX No. 7 Bonding Oil strengthens and repairs all hair types. It protects hair color from fading and builds hair structure. Gives vibrancy to the hair, is ultra-light and does not weigh down. The quality / repair of the hair is improved. With UV and heat protection. Vegan and Crue