Tags attached purchase in Marseille France Savon de Marseille, 150 g slice, 72% vegetable oils We carefully cut "Grandma" slices from large 17 kg blocks made during the saponification process that is carried out in large cauldrons. It is also known as 'anti-cramp' soap because of its lye content, and for this reason the soap is placed under the mattress cover. Grandma's slice is also known to be excellent moth repellent. Just place the slice between your laundry, or hang one in your wardrobe. Made from 72% vegetable oils. Net weight: How do you recognise genuine 150 g Savon de Marseille soap? Check the logo from the Union des Professionnels du Savon de Marseille! More information. Description Product Details fusing as a stain remover, it is best to use a slice: before washing, slightly wet the soap and rub it on the stain. Savon de Marseille is the perfect choice for use on shirt collars and foundation stains. For use on wounds: Savon de Marseille can be used to clean small wounds and grazed skin. The sodium chloride content means it can also be used as a toothpaste: It is very gentle on your gums, and will leave your teeth feeling clean and white.