Black Hair Darkening Soap. Clean while Darkening the Hair Color to the shade of Black. Used to help cover Gray with Black Natural Plant-Based Coloring Agents. Intended for use on Black Colored Hair Only. Important Note: This product is for Dark Black Hair Only. Caution: Some chemically treated hair can NOT use this product. Check with your local beautician regarding your hair type and any previous chemical processes before using this product. This product contains natural coloring agents to generate a dark black color on the hair.  Natural Plant-Based Formula, Unisex Adult, Rich in Shea Butter, Suitable for Ordinary Hair Types, Deeply Nourishing The Roots. Hair Type: Black Colored Hair Only. Main Ingredients: Black seed, Ginseng.