Our men's shampoo contains butanediol, citric acid, and glycerin. It helps to restore the natural color of hair, reactivate hair color, and prevent hair from turning white. Its usage is simple: moisten the area where you want to use the soap cover, apply the soap cover to your hair or beard and massage until it bubbles, wait for 5 minutes, and then rinse off with warm water. After use, it eliminates waste accumulation in hair follicles, unclogs microcirculation in the head, repairs and replenishes a large amount of melanin in hair follicles, repairs hair follicle function, nourishes hair follicles, strengthens hair roots, accelerates melanin supply, and makes hair darker and darker.