What is Black soap / Black olive soap? What is Black soap / Black olive soap? October 26, 2019 Ina Affroukh The basic composition of the soap is black olive oil and vegetable soda. In contrast, the color of the soap may vary depending on the oil used. The soap can therefore have a dark green or dark brown color. Read more:Savon Noir- Black Soap – 100 ml Newer What is Ghassoul? Older Which countries do you sell to?