A shampoo and hair serum duo. Great hair starts with this duo. The Repairing Shampoo & Serum Duo features two of OLAPLEX’s most iconic products to transform your hair. Featuring the No.4 Bond Maintenance Shampoo to repair and protect the hair from everyday stresses; while caring for damaged hair; split ends; and frizz by relinking broken bonds. Plus; the No.9 Bond Protector Nourishing Hair Serum to protect the hair from heat of up to 232°C while protecting the hair from daily damage from heat and pollution for up to 48 hours. Vegan Cruelty free Suitable for all hair types OLAPLEX products are thoroughly tested in accordance with industry standards inhouse and by independent thirdparty laboratories for safety and efficacy.Set Includes: No.4 Bond Maintenance Shampoo; 250ml No.9 Bond Protector Nourishing Hair Serum; 90ml