For what do you use it? These elements contain the hidden powers of midnight, it is important to remember that this hour is the crucial moment of the end of the hours of the west and the beginning of the rising. (Magic hours) It is the hour where the harmful influences of energies that do harm are neutralized, the witch or the magician who performs different rituals, attraction, abundance, luck, power, love, distances, salts, etc.
In the magical world, protection is important, just like if a ritual is performed to favor or help another person, these elements prevent the person's energy from "jumping" to the witch or wizard.