Dualsenses Blondes & Highlights Color Lock Serum for blonde and highlighted color-treated hair, blended with microPROtec complex and Luminescine.  Locks in colour instantly and amplifies colour luminosity.  Provides weightless care, combability and keeps salon-colour vibrant for up to 22 washes.  Activate.  Shake well and work through wet or towel-dried hair.  Leave in.