OLAPLEX N0 Intensive Bond Builder ? 155 ml / 5.2 oz Unlock salon-quality repair at home with OLAPLEX N0 Intensive Bond Builder. This highly concentrated pre-treatment primes your hair for N3, rebuilding disulfide bonds, reducing breakage, and strengthening strands from within for healthier, resilient hair. Rebuilds hair bonds at the molecular level with patented OLAPLEX technology Boosts repair results when paired with N3 Hair Perfector Strengthens and reduces breakage immediately Vegan, color-safe, and free from sulfates, silicones, parabens, phthalates, phosphates, MIC/MIT, and protein Details This professional-grade primer works best when used in tandem with OLAPLEX N3 Hair Perfector. It penetrates deeply into dry hair, repairing and fortifying from the inside out?perfect for chemically treated, heat-damaged, or fragile hair. Key Ingredients Patented OLAPLEX Bond Building Technology? (Bis-Aminopropyl Diglycol Dimaleate) ? Reconstructs broken disulfide bonds delivers long-lasting strength Water, Phenoxyethanol, Sodium Benzoate ? Gentle, effective formula with stable preservation Free Of: Sulfates, Silicones, Phthalates, Phosphates, Parabens, MIC/MIT, Protein. Safe for color-treated, vegan, cruelty-free. How To Use Apply on dry hair, from root to tip. Leave on for 10 minutes?do not rinse. Apply OLAPLEX N3 Hair Perfector over the top; comb through and leave on for another 10 minutes. Rinse thoroughly, then shampoo with N4 and condition with N5 for best results. Use the N0 + N3 system once weekly, or 2?3 times weekly for severely damaged hair. Why You Should Buy It Primes and enhances the deep repair action of N3 Delivers up to 68% more repair and up to 3 stronger hair when used with N3 :contentReference[oaicite:1]{index=1} Lightweight yet powerful?ideal for preparing hair for deeper treatment Professional-grade, at-home solution trusted by beauty experts FAQs What does it do? It rebuilds broken disulfide bonds to restore hair strength and integrity. Do I need N3? Yes?N0 is a primer designed to enhance N3?s effectiveness. How often should I use it? Use once a week, or 2?3 times a week for more damaged hair. Is it safe for color-treated or fragile hair? Absolutely?vegan, free of harsh chemicals, and suitable for all hair types.