Olaplex N?. 0 Intensive Bond Building Hair Treatment: Primes & Strengthens | Repairs & Protects Hair | For Coily, Curly, Straight, and Wavy, 155 mL /Features Builds hair bondings Strengthens hair integrity Protects hair integrity A professional effect Model Number: 20142879 Product Description Product Description Our professional inspired treatment primes your hair for deeper repair, rebuilds hair bonds, strengthens and protects hair integrity. Use as the first step in a two part at home system with No. 3 Hair Perfector (sold separately) to strengthen and repair all types of damaged hair.