Yes, this is possible. KP or Illumina can for example be applied on the roots to achieve a better coverage while lifting the natural pigment. SHINEFINITY, being a glaze, can be applied on the lengths and ends and the two products can be blended together for a smooth transition. This products can be intermixed however (i.e SINEFINITY shades should only be intermixed with other SHINEFINITY shades and the dedicated SHINEFINITY Activator).