There are more ways to add magnesium back into your body than just cream. Magnesium Soap is a fantastic way to detox with charcoal and add magnesium back into the pores of the skin. Magnesium Bar Ingredients: Epsom salt, Magnesium flakes, nano magnesium, charcoal, coconut oil, grapeseed oil, tea tree essential, distilled water, sodium hydroxide.