Travel Gray Reverse BarThe anti gray hair soap bar can be easily put in the bag and suitcase, which does not take up much space at all. In solid form, there is no need to worry about flowing out like shampoo. Nice hair darkening shampoo bar to take when you travel. Organic & Natural The ingredients in our black bar shampoo are mild enough for daily use. With the shampoo bar for grey hair, your hair would get more dark and shiny Clean But Protect ScalpOur manes gray reversal bar can help remove impurities from pores and reduce excess oil without stripping hair of its natural oils. The dark shampoo bar would also protect your scalp and provide nutrients for your hair to turn from gray hair to vivid dark color. Nourishing & RestorativeThe hair darkening soap will not only removes gray hair, but also nourishes and restores hair, making it look shiny and healthy. With long-term use of this darkening soap for hair, the gray hair would be Easy to UseIt would be super easy to use this natural grey hair removal soap. Wet your hair first, then apply shampoo soaps directly to wet hair and massage gently into scalp for 2-3 minutes . After that, just wash off the foam of grey hair soap with warm water.