Step 1 : Grate the Marseille soap
Grate the soap and put it in a little pot
Step 2: Pour into the stew pot
Pour all the ingredients (Marseille soap, black soap and the soda crystal) into the stew pot
Step 3 : Mix the preparation
Add to the water
Mix until the soap flakes are completely dissolved
Leave to cool for 30 minutes
Step 4: Add the essential oil
Add ten drops using a funnel
To finish pour the mix into a glass jar