If your coconut oil isn't liquid already, melt it in the microwave or over the stove top.
In a bowl (wood, plastic or glass) mix bentonite clay and turmeric with a spoon or spatula (also, wood, plastic, glass or silicone).
Now add liquid coconut oil. If using essential oils (see notes) add your preferred amount of drops to one of the tablespoons of oil before mixing it in.
Mix until everything is well incorporated and no lumps are left. If the toothpaste seems too crumbly, add more oil. If too runny, add more clay.
Store in a 60ml / 2oz container. A little glass jar works best, I find.