Olaplex No. 0

Key benefits: Primes hair for No.3 Hair perfector (sold separately). Strengthens bonds deep within the hair strands. Repairs hair from chemical, mechanical and environmental damage. What is it? Intensive treatment that primes hair for deeper repair.  Who's it for? All hair types, especially those with damaged hair. How to use: Apply to dry hair, fully saturating each section. Let  process for 10 minutes. DO NOT RINSE. Apply No. 3 hair perfector (sold separatel Take home size: 5.2 oz