Most hair treatments focus on coating the surface, this intensive pre-treatment works inside the hair structure. Olaplex No.0 Intensive Bond Building Hair Treatment is a high-strength primer designed to repair damaged bonds and boost your at-home routine. It gives compromised hair a targeted reset between salon visits.

Powered by OLAPLEX’s patented Bis-Aminopropyl Diglycol Dimaleate, this formula seeks out broken disulphide bonds caused by colour, chemical services, brushing and heat. By helping to relink these internal bonds, hair can feel stronger and look healthier. A streamlined ingredient list keeps the focus on performance rather than heavy conditioning agents.

No.0 has a lightweight, water-thin texture that soaks into dry hair fast, reaching even dense or coarse strands. It leaves a damp, slightly tacky feel that is designed to layer seamlessly under No.3 without weighing hair down. Once rinsed and followed with shampoo and conditioner, hair feels cleaner, not coated.

Use No.0 as the first step in your weekly bond-repair routine, before shampoo and conditioner. Fully saturate dry hair, leave on, then apply No.3 directly over the top without rinsing. This layering approach helps maximise contact time with the bond-building technology.

Patented OLAPLEX Bond Building Technology™ targets disulphide bonds for structural repair rather than surface masking.Water-thin delivery system allows even, root-to-tip saturation on all hair types and densities.Designed as a primer to clinically enhance the repairing performance of OLAPLEX No.3 Hair Perfector.Minimalist formula reduces interference from heavy oils or silicones, keeping the focus on bond repair.

For best results, pair No.0 with Olaplex No.3 as a two-step repair treatment, then cleanse with No.4 shampoo and condition with No.5. Between treatments, support ongoing bond care with stylers such as No.6, No.7 or No.9 depending on your daily routine.

A professional-strength, at-home pre-treatment that primes hair for deeper bond repair and stronger-looking lengths.

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

• Step 1. Start with dry, unwashed hair and section it for easier application.
• Step 2. Apply No.0 directly from the nozzle, working in small sections and squeezing to saturate from root to tip.
• Step 3. Comb through with a wide-tooth comb to ensure even distribution, especially through mid-lengths and ends.
• Step 4. Leave on for 10 minutes to allow the bond-building technology to penetrate.
• Step 5. Without rinsing, apply Olaplex No.3 generously over No.0, comb through again and leave on for a further 10 minutes or longer as desired.
• Step 6. Rinse thoroughly, then follow with shampoo and conditioner as usual.

Pro Tips

• Focus extra product on the most damaged areas, such as over-processed lengths, ends and hairline sections.
• For very dense or long hair, work in multiple smaller sections to guarantee full saturation.
• Use once a week for general maintenance, or up to three times weekly on heavily compromised hair as advised by your stylist.
• Avoid applying heavy oils or silicone-based products before treatment, as they can interfere with penetration.