Olaplex Bond Building Treatment No.0 primes hair for max repair with the highest dose of patented Olaplex technology in any take-home product.

It rebuilds hair bonds, strengthens and protects hair integrity. Use as the first step in a two-part system with N°.3 Hair Perfector. N°0 acts as an intensive repair booster working in tandem with N°3 to receive your most intense repair. This means 68% more repair & 3x stronger hair when used together.

How to Use: Use the two-part system with N°.3 once a week or two to three times a week for damaged hair. Apply to dry hair, fully saturating each section. Suitable for all hair types, especially for those with visible damage.