Olaplex No.0 Intensive Bond Building Hair Treatment 155ml / 5.2 fl.oz.

This 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.

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.

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

- Primes hair to intensify benefits of No.3.
- Jump starts repair deep within the hair strand.

PRO TIP: Brush or detangle hair before applying No.0 so it can easily be absorbed. For thick, coarse, or long hair, work in small sections to ensure each area is fully saturated.

To use: Apply slowly to dry hair, distributing evenly from root to tip.
Work No. 0 into small sections by squeezing the liquid into the hair to be fully absorbed as you go. Lightly saturate from root to tip. Hair should be damp, not drenched. Let process for 10 minutes. DO NOT RINSE. Apply No.3 Hair Perfector over hair with No.0 applied to it, combing through as needed. Let process for a minimum of 10 minutes. Rinse, shampoo & condition. For best results, use No.4 Shampoo & No.5 Conditioner.

Where: Apply to dry hair, fully saturating each section.
When: Use the two-part system with N°.3 once a week or two to three times a week for damaged hair.
For: All hair types, especially for those with visible damage.

OLAPLEX products are thoroughly tested in-house and by independent third-party laboratories for safety and efficacy. This product testing includes the industry standard Human Repeat Insult Patch Test (HRIPT), which tests for skin irritation or sensitivity. All OLAPLEX products have passed the HRIPT, meaning the products show no signs of causing irritation, inflammation, or sensitivity.

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

How to Use:\nStart with dry hair. Apply Olaplex No.0 Intensive Bond Building Hair Treatment, working in sections from root to tip until hair is lightly saturated. Leave on for 10 minutes without rinsing, then apply Olaplex No.3 Hair Perfector directly over the treatment and comb through. Leave for at least a further 10 minutes before rinsing, then shampoo and condition as usual.\n\nFrequency:\nUse once a week as part of a strengthening routine, or 2–3 times per week on very damaged hair, following the product instructions.\n\nApplication Technique:\nApply slowly to dry hair, squeezing the liquid along each section and gently pressing it into the lengths so hair is damp rather than drenched. Layer No.3 Hair Perfector over No.0, ensuring even coverage before rinsing and cleansing.\n\nBest Practices:\nFor consistent results, use on unstyled, product-free hair where possible. Allow each step its full processing time and follow with a nourishing conditioner. Patch test new products if your scalp is sensitive.\n\

- Designed as the first step in the Olaplex at-home system, helping to prime hair for more intensive bond care\n- Lightweight liquid formula that works across all hair types, including colour-treated and heat-styled hair\n- Helps to support stronger-feeling, less brittle hair when used with Olaplex No.3 Hair Perfector\n- Fits easily into a weekly routine, offering targeted care without adding weight or residue