The blessings of Maa Baglamukhi create a divine protecting shield in the shape of an aura around an individual therefore shielding him/her from malefic energies in the form of black magic spells or evil eye. I've purchased Maa Baglamukhi Kavach couple of times in the past, it is analogous as https://www.youtube.com/shorts/5VeSyP9JRw0