The method homeopaths use to this day is called serial dilution. A drop of the original substances , whether it's snake venom or sulphuric acid, is added to 99 drops of water or alcohol. Then the mixture is violently shaken. Here it's done by machine, but traditionally homeopaths would hit the tube against a hard surface. Either way, homeopaths believe this is a vital stage. It somehow transfers the healing power from the original substance into the water itself. The result is a mixture diluted 100 times.