When the microblading procedure is being performed, the sneezing reflex is sometimes triggered in the patron. Like with eyebrow tweezing, sometimes the trigeminal nerve is stimulated to the point that the patron may want or need to sneeze. This nerve connects the face to the brain and transmits sensations between them. It has three branches; the one worth talking about here is the ophthalmic branch, which supplies nerves the to cornea and iris, the forehead, parts of the sinuses and the mucous membranes in the nose, and the skin of the eyelids, eyebrows and nose. Which basically means that when you microblade the eyebrow the nerve is being stimulated. Sometimes causing the person to jerk while the procedure is being performed.