THE FULL SERVICE KIT: Designed to last until your next treatment; each kit includes 1 double sachet of steps 1 and 2, and 2 double sachets of step 3 to give you coverage in between treatments. 1 double sachet pH Plex steps 1 & 2 and 1 double sachet pH Plex 3 is sufficient for shoulder length hair application. | FOR PROFESSIONAL, SALON QUALITY RESULTS AT HOME: World-wide patented pH Plex is the only product to match the pH-value of your Color or Bleach and does not interfere with them during the process. No adjustments needed for salon quality results at home. Protect and repair your hair during Color and Bleach jobs with no change in your routine. Use pH Plex 1 & 2 with your Color or Bleach and pH Plex 3 once per week to replenish the Actives provided with pH Plex 1 & 2 | CONVENIENT SINGLE DOSE PACKAGING: Clean, no-contamination-possible, single dose packaging. pH Plex is pre-dosed, no complicated mixing required. | pH Plex IS MADE IN GERMANY