APPLICATION MANUAL: Step 1: Preparation Wash hair 2 or 3 times with KERARGANIC PRE-TREATMENT SHAMPOO (STEP 1) to remove residues from scalp and hair and to open cuticles for better absorption of treatment. Then blow dry to about 80% to 90% and untangle hair with a comb. Step 2: Application Separate hair in 2 or 4 sections, tying each section 7 to facilitate the application of treatment. Shake bottle well, then pour about 1 to 1 1/2 ounce of ORGANIC KERATIN SYSTEM or ULTRA GOLD QUATERNIZED KERATIN SYSTEM in a bowl. Starting from the nape upwards, brush product ¼ inches away from the roots, moving towards the tips. Make sure every strand receives adequate amount of treatment. Spread the treatment evenly with a fine-toothed comb. Repeat the process on the remaining untreated hair. Step 3: Drying When finished, wait about 15 minutes, then blow dry it 90% or more. Step 4: Ironing Set iron temperature to about 400°F / 200°C. Start from the nape. Iron small portions of hair 4 - 6 times from roots to middle, then 4 - 6 times from roots to tips. Caution: If hair is too damaged and porous, use lower temperature Step 5: Rinsing After the application, first wash could be done 30 minutes later, the next day or 2 days after. If washing hair after 30 minutes,do not use shampoo, just rinse well with water. If washing the next day or 2 days later, wash lightly with Kerarganic salt-and sulfate free maintenance shampoo. Step 6: Finishing After rinsing or shampooing, towel dry hair and apply Kerarganic Post-Treatment Mask to the entire hair, combing it to spread mask evenly. Then cover with a shower cap and let it sit for 15 - 20 minutes. For better result, sit client under an overhead dryer. Then rinse off mask, blow dry and brush. If client wants, the hair can be flat ironed again.