Simple three steps: 1, do a good job of protection, with disposable gloves. 2, daub and rub, evenly apply the cream on the hair, fully massage and foam to ensure that all hair and cream make full contact. 3, rinse thoroughly, let the cream and hair sit for 10 minutes (the accurate time can be determined by observing the color with the naked eye), ensuring that the hair is rinsed clean after coloring.