The No.5P Blonde Enhancer™ Toning Conditioner is the first purple conditioner with patented OLAPLEX Bond Building Technology™. The nourishing formula, which conditions hair from root to tip, provides intense shine and neutralizes unwanted yellow tones while moisturizing hair without weighing it down. OLAPLEX Bond Building Technology™ strengthens blonde and gray hair.Neutralizes yellowness and shine from roots to endsGives weightless smoothness and combabilityStrengthens healthy-looking blonde and gray tonesCLINICAL STUDY RESULTS: No.5P has been clinically proven to- smoothes- strengthens- Reduces yellownessClinically proven color safety.RESULTS OF THE CONSUMER ADVOCACY STUDY: No.5P BLONDE ENHANCER™ TONING CONDITIONER87% agree that the yellow tint in the hair had decreased87% agree that the tone evens out81% noticed a restoration of brightness and shine*No.4P + No.5P SYSTEM91% agree that the yellow tint in the hair had reduced**Based on an independent consumer perception study of 60 wom