OLAPLEX#3PERFECTOR 3.3 OZ The No.3 Hair Perfector will maintain strength, structure, integrity, softness and shine leading up to your next salon visit. No.3 Hair Perfector works dynamically to help repair damage to all hair types, and it can also be applied once a week between chemical services to further lock-in the results of any given salon treatment. Discover how fabulous it feels to have incredibly strong, totally healthy hair.