Marseille soap or Savon de Marseille is a traditional hard soap made from vegetable oils That has-been Produced around Marseille , France , for about 600 years. The first documented soapmaker Was Recorded there in about 1370. By 1688, Louis XIV Introduced regulations in the Edict of Colbert limiting the use of the name soap to olive oil based soaps.  The law has been made to be used.
By 1913 production had reached 180,000 tons , and in 1924 there were 132 soapmaking companies in the Marseille and Salon-de-Provence areas combined, but by 2000 only five remained.
Traditionally, the soap is made by mixing sea water from the Mediterranean Sea , olive oil, and the alkaline chemicals soda ash ( sodium carbonate ) and lye ( sodium hydroxide ) together in a wide cauldron (usually making about 8 tones). This mixture is then heated for several days, stirring constantly. The mixture is allowed to sit until ready, then poured into a mold. While still soft it is cut into bars, stamped, and left to completely harden. The whole process can be taken to a month.
There are two main types of Marseille soap, a greenish hued made with olive oil and a white made of palm oil or a palm and copra oil mixture.  Originally sold in only 5 kg and 20 kg blocks, today they come in sizes between 300 g and 1 kg, although larger sizes are often available, some up to 40 kg .
- Aleppo soap
- Castile soap
- Hot process
- Nabulsi soap
- Vegan soap
- ^ Jump up to:a b “Soap Manufacturers Association of Marseille” . Retrieved 20 December 2015 .