Primes hair to absorb nourishment for maximum repair

A professional-inspired treatment that primes hair for deeper repair with the highest dose of patented OLAPLEX technology in any take-home product. It rebuilds hair bonds, strengthens and protects hair integrity. Use as the first step in a two-part system with N°.3 Hair Perfector.


Scientifically Proven:
68% more repair & 3x stronger hair*
*When used as a two-part system in just one use.


Application Tip: N°.0 bottle should last 3-6 applications, based on hair length and density.


  • Step 1.

    Apply N°.0 slowly to dry hair, distributing evenly from root to tip.

    Step 2.

    Work N°.0  into small sections by squeezing the liquid into the hait to be fully absorbed as you go.

    Step 3.

    Lightly saturate.  Hair should be damp, NOT drenched.  Let process for 10 minutes.  DO NOT RINSE.

    Step 4.

    Apply N°.3 over hair with N°.0 still applied.  Comb through and process for at least another 10 minutes.

    Step 5. 

    Rinse, Shampoo and Condition.

    For best reults, use N°.4 Shampoo and N°.5 Conditioner

  • Water (Aqua), Bis-Aminopropyl Diglycol Dimaleate, Sodium Benzoate, Phenoxyethanol