OLAPLEX Healthy Hair Essentials Kit restores hair back to its youthful glory. This set repairs, fortifies, hydrates and protects hair for a healthy look. The kit includes No.3 Hair Perfector, a pre-shampoo treatment. No. 4 Bond Maintenance Shampoo hydrates and protects against damage. No.5 Bond Maintenance Conditioner strengthens damaged, frizzy hair. Finally, No.7 Bonding Oil tames frizz and enhances shine.