The refined Marseille soap produced by the Le Sérail soap factory is a real dehydrated Marseille soap (the water is removed through a natural drying process).
 The raw olive or vegetable Marseille soap is grated into shavings before being dried for 15 days to remove all the water contained in the manufacturing process and to avoid bad aging of the product, especially when it is shipped to countries with hot or humid climates.
 It is then cast and stamped again.
 Like raw soap, it contains no colorants, fragrances, preservatives or bleaches.
 It is also produced by saponification in a kettle using the "Marseille process".