The raw materials used in the manufacture of the traditional Savon de Marseille are seven at most. The fatty substances of compulsory vegetable origin - olive-pomace oil, coconut oil, palm oil, or palm kernel oil - must represent 72% of the total components. Traditional soaps also consist of soda, a plant from the salted lands of Camargue which used to be reduced to ashes to provide soda carbonate. Finally, soap makers use sea salt, which washes the soap paste of the impurities produced during its manufacture and gives it its extra pure quality, and water.