Prime your hair for your deepest at-home repair with this salon-inspired pre-treatment to boost the effects of N°3 Hair Perfector. The highly concentrated formula rebuilds disulfide bonds to repair more severe damage and immediately strengthens hair when N°0 is used with N°3. Clinically Proven 68% more repair* 68% better detangling, improved conditioning, and smoother* 65% reduction in breakage** *When used as a three-part system of N°0, N°3, and N°4 in just one use. **When used with N°4. KEY BENEFITS ?Intensifies repair results with N°3 ?Strengthens hair and reduces breakage ?Rebuilds hair bonds at a molecular level TEST RESULTS Results With One Use UNRETOUCHED IMAGES* *Results may vary. Results achieved by treating hair with Nº.0 Intensive Bond Building Treatment + No.3 Hair Perfector, then cleansing with No.4 Bond Maintenance Shampoo, conditioning with No.8 Bond Intense Moisture Mask, and applying No.6 Bond Smoother to damp hair before styling. UNRETOUCHED IMAGES* *Results may vary. Results achieved by treating hair with Nº.0 Intensive Bond Building Treatment + No.3 Hair Perfector, then cleansing with No.4 Bond Maintenance Shampoo, conditioning with No.5 Bond Maintenance Conditioner, and applying No.9 Bond Protector Nourishing Hair Serum to damp hair before styling. USAGE RESTRICTIONS Avoid contact with eyes.The Nº.0 Intensive Bond Building Hair Treatment works to visisbly strengthen and protect the strands to minimise the appearance of damage. Infused with the highest possible concentration of patented Olapex Bond Building technology, the lightweight formula works as a primer to boost the efficacy of No.3 Hair Perfector. The reparative hair treatment nourishes the hair to encourage a sleek, fuller-looking finish.Olaplex No.0 Intensive Bond Building Hair Treatment primes the hair for deeper repair, rebuilds hair bonds, strengthens, and protects hair integrity.