Olaplex No.0 Intensive Bond Building Treatment with Trigger

Olaplex No.0 Intensive Bond Building Treatment with Trigger is a professional-quality pre-treatment that strengthens and repairs hair bonds. Powered by patented OLAPLEX Bond Building Technology, it primes hair for deeper repair and helps rebuild bonds at a molecular level to protect hair integrity.

Ideal for all hair types—including color-treated and chemically processed hair—No.0 is color-safe and vegan, with a formulation designed to be compatible with a wide range of hair needs.

• Boosts repair when used as part of the three-part system with Nº.3 Hair Perfector and Nº.4 Bond Maintenance; studies show up to 68% more repair in a single use.
• Priming booster primes the hair for deeper repair, rebuilding bonds at a molecular level to strengthen overall hair resilience.
• Works best as part of a two-part routine used first with Nº.3 for enhanced effectiveness; not recommended to be used alone.
• Safe for chemically treated hair and suitable for all textures, improving manageability and detangling after treatment.

How to use

• Step 1: On dry hair, apply Nº.0 evenly from root to tip and saturate the strands.
• Step 2: Leave on for 10 minutes. Do not rinse.
• Step 3: Apply Nº.3 Hair Perfector™ and comb through.
• Step 4: Leave Nº.3 on for a further 10 minutes, then rinse well.
• Step 5: Shampoo and condition with Nº.4 Bond Maintenance® and Nº.5 Bond Maintenance® as part of your routine.

Tip for best results: Use Nº.0 as the first step in a two-part system with Nº.3 once a week, or 2–3 times per week for very damaged hair, to maximize repair and resilience.