HOW TO USE:STEP 1: PRE-CLEANSECleanse with OLAPLEX® No.4C BOND MAINTENANCE® CLARIFYING SHAMPOO. Leave on for 5 minutes. Rinse thoroughly.STEP 2: TREATApply 1-3 pumps of BROAD SPECTRUM CHELATING TREATMENT evenly fromroot to end. Do not oversaturate. Gently work through the hair using thepalms of your hands. Leave on for 15-30 minutes. Rinse thoroughly.Follow with in-salon service or proceed to Step 3.STEP 3: POST CLEANSE AND CONDITIONCleanse with OLAPLEX® No.4 BOND MAINTENANCE SHAMPOO.Follow with OLAPLEX® 4-IN-1.