Immerse your hair in the reparative powers of Olaplex No 4 Bond Maintenance Shampoo. A unique and innovative hair care solution designed to restore the health and integrity of your hair, this highly-concentrated, salon-quality shampoo is generously sized at 2000ml to ensure longer-lasting nourishment. At its core, the science-backed formula works to seek out and repair broken bonds caused by chemical, thermal, and mechanical stress, strengthening the very foundation of your hair. Olaplex No 4 not only cleanses the hair effectively, but it also dramatically enhances its softness, shine, and manageability, making it an essential step in your hair care regimen. Get ready to fall in love with your hair all over again with Olaplex No 4 Bond Maintenance Shampoo 2000ml, your ultimate ally in achieving healthy, vibrant hair that turns heads. Order today and start your journey to more beautiful hair! How to Use: Massage into hair, working from the root to the tip using fingertips and simply rinse out. Use weekly alongside Olaplex No. 3 Hair Protector.