First please - Hair Center Treatment NO. 0

Redesigned for a fast and targeted flow application, the intensive Hair Building Treatment No. 0 features an easy-to-use nozzle that preps the hair and provides the highest concentration of the patented bond-building technology for any OLAPLEX product at home. Use it as the first step in a two-part home system with No. 3 Hair Perfector to strengthen and repair all types of damaged hair.