I recently got an email from a client who told me that she had worked with a voodoo caster who told her to put menstrual blood in something she was serving to her potential love interest. Whoa, girl do NOT do that, I told her immediately hoping that she had no already done so.
Magick is sympathetic in nature meaning that witches and voudons and other magick practitioners use herbs, candles, crystals and other items in spells and rituals. Some use biological materials in their spells and although I understand the significance of its use, in this day and age it simply is not necessary to resort to these practices.
Magick is energy ultimately; it does not rely on biological materials for the efficacy of spells. Many spellcasters use this as some kind of magickal mystique to keep things spooky. The darker the spells often the creepier the ingredients involved.
The truth is creepy ingredients in spells is a considerable misnomer. often spells listed ingredients in the form of code to keep the actual formulas secret. No one was ever using “eye of newt” and batwings in their preparations (though they did and some of us still do use some poisonous plants like belladonna, nightshade and henbane in spells).
Take care if someone tells you especially to use blood or other biological materials like semen, urine and saliva. Steer clear of such practices as there is truly no good reason to tie biological materials into spell casting when it is far more useful to have a photo of the person and their birthdate for the spell to be directed.
Furthermore a spellcaster is the one who should be working the sympathetic nature in the casting or ritual itself, not the client for whom the spell is intended. The client should only have to follow up through appropriate energy-adding instructions.
Magick works through the inherent energy and universal force of all things. It is of a quantum nature not biological.