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• Apply to dry hair, saturating from root to ends. Hair should be damp, but not dripping.
• Leave on for 10 minutes. Don't rinse.
• Layer Nº.3 HAIR PERFECTOR directly over top of Nº.0 and leave on for an additional 10 minutes.
• Rinse thoroughly. Cleanse with OLAPLEX Nº.4 BOND MAINTENANCE SHAMPOO and OLAPLEX Nº.5 BOND MAINTENANCE CONDITIONER.

• The Nº.0 Intensive Bond Building Hair Treatment boosts the efficacy of OLAPLEX Nº.3 Hair Perfector by absorbing quickly to jumpstart repair deep within the hair strand.
• Nº.0 Intensive Bond Building Hair Treatment strengthens and rebuilds hair bonds and is scientifically proven: 68% more repair & 3x stronger hair* *When used as a two-part system in just one use.