Description: Made from 100% vegetable oils, solvent-free and dye-free, Marius Fabre's olive oil black soap has been made for more than 110 years in Salon-de-Provence in France, according to tradition. Marseille. Black soap is an ecological solution with multiple uses for cleaning everything, ranging from house tiles, windows, laundry, leather, etc., but also as a natural and gentle shampoo for animals, dogs, horses.