Summer Hair care Olaplex Treatment Step 1: Wet Hair then apply No.3 from roots to tips and leave on for at least 10 min Step 2: Rinse No.3 and Wash Hair with No.4 Shampoo Step 3: Apply No.8 from mid shaft to ends and leave on for minimum 10 minutes , then rinse Step 4: apply No. 9 Dry & Style Sephora | Olaplex | Long Hair | Color Treated Hair | Hair Treatment | Summer Hair