A professional-inspired treatment that primes hair for deeper repair, rebuilds hair bonds, strengthens, and protects hair integrity. Key Features: Repairs damaged and compromised hair. Strengthens and protects hair structure. Restores healthy appearance and texture. How to Use: Apply to dry hair, fully saturating each section. Leave on for 10 minutes. For optimal results, follow with OLAPLEX No. 3 Hair Perfector. Rinse, shampoo, and condition as usual.