Lice killing medicine. All lice will be gone within 1 to 4 days, and all lice will die after the first application. Usage instructions: First wash your hair with shampoo, then once the hair is dry, divide your head into 7 sections. Apply 3 drops of medicine in each section (e.g., front of the head, middle, and near the nape where the hairline ends). Repeat this for all 7 sections. Call for more information.