Step1: Wet your hair with warm water. Step2: Take an appropriate amount of product and whip it into foam,apply it evenly onyour hair, and rub it to clean your scalp. Step3: Add 10-12 drops of rosemary essential oil to shampoo to enhance hair care effect. Step4: Clean the foam with warm water.Wash again with hair conditioner soap.Let your hair dry and apply a hair mask.