Redesigned for a quick and targeted stream application, the No.0 Intensive Bond Building Hair Treatment features an easy to use nozzle that primes the hair and delivers the highest concentration of the patented bond building technology of any OLAPLEX at home product. Use as the first step in a two-part at-home system with No.3 Hair Perfector to strengthen and repair all types of damaged hair.

How to use:

1. Apply Nº0 slowly to dry hair, distributing evenly from root to tip.

2. Work Nº0 into small sections by squeezing the liquid into the hair to be fully absorbed as you go.

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

4. Apply Nº3 over hair with Nº0 still applied. Comb through and process for at least another 10 minutes.

5. Rinse, shampoo & condition. For best results, use Nº4 Shampoo & Nº5 Conditioner.