How to use Black salt depends on what result you wish to attain:   
 
~ As a protection, sprinkle around your house in the same method as blessed salt.  
 
~ To banish evil or remove negativity from your space, scatter a pinch in the space and vocalize or visualize the energy leaving.  
 
~ To protect from unwanted people or influences, sprinkle salt outside your doors while naming the person or entity you do not wish to visit your property. You should also name the reasons behind this for added power.  
 
~ To remove a person from your home, carefully sprinkle some salt behind them, then sprinkle some outside your main door.
 
 
Ritual Black Salt:
Folk Magic Uses:
This type of black salt is created differently, often by combining sea salt with charcoal, ash, or iron oxide.  
It's primarily used in folk magic traditions, particularly Hoodoo, for:
Protection: Warding off negative energies and evil spirits.  
Banishing: Removing unwanted influences.
Creating barriers: Establishing energetic boundaries.
It is not intended for consumption.