Olaplex N° 0 Intensive Bond Building Hair Treatment 155ml Olaplex Intensive Bond Building Hair Treatment n ° 0 is a professional treatment that prepares the hair for the reconstruction service at home. It strengthens and protects all types of damaged hair and, just like the primer used for make-up, increases the effectiveness of Olaplex Hair Perfector n° 3. ResultsRepairs, protects and rebuilds for hydrated, intact, soft, full and strong hair.Hair protected during any type of treatment. TechnologyBis-Aminopropyl Diglycol Dimaleate.Treatment free of silicone, sulphates, phthalates, DEA, aldehydes and gluten. UsageApply Olaplex n ° 0 on dry hair, completely covering from roots to ends.Leave on for at least 10 minutes.Do not rinse.Apply Olaplex n ° 3 and leave on for a minimum of 10 minutes.Rinse, then proceed with Olaplex shampoo and conditioner.