The blessings of Maa Baglamukhi create a divine protecting defend in the form of the aura all around a person thus safeguarding him/her from malefic energies in the form of black magic spells or evil eye. An additional interpretation indicates that Baglamukhi is a corruption on the term Valgamukhi; https://www.youtube.com/watch?v=IOlRdolK0uM&t=2s