[Restore Hair Color]: Dark Shampoo Bar has the effect of restoring your natural hair color, from gray hair to vivid dark color. Natural Grey Hair Soap is especially beneficial for people with premature graying of hair. Long-term use of shampoo bar, the effect can be seen. [Organic & Natural]: Gray White hair reverse bar is made with natural organic ingredients. The ingredients are mild enough for daily use. Use Black Hair Shampoo every day as a daily shampoo, then turn white or gray hair into a youthful and vivid dark color, use the new hair reverse bar to restore your self-confidence and make you look and feel younger. [Repair Nourishment]: Provide sufficient nutrition for hair, deeply nourish hair and scalp. Magically restores hair and makes it look vibrant and youthful; enhances hair color and maintains its brightness. Gray Hair Soap can be used not only on hair, but also on beard and eyebrows. [Easy To Use]: Hair Darkening Shampoo Bar for Gray Hair, Perfect for men and women. Wet hair, apply shampoo soaps directly to wet hair and massage gently into scalp for 2-3 minutes. Just wash off the foam with warm water.