"Without knowing the correct measurement for where the arch should fall to their facial structure, and properly mapping it out prior to at home waxing, often the brows will become asymmetrical resulting from taking off too much hair," says Ann Balaguera, National Director Esthetics at The Red Door Salon & Spa. "The safer approach is to apply the wax with space between the main brow line, and then tweeze to clean up the arch," she says.
"One can map their own brows at home by taking an eyeliner or brow pencil and lining it up, beginning from the base of your nose straight upwards," she says. "This is where the center of your brows should begin, moving the pencil like a protractor to line up with the beginning of the eye begins the arch, then across the retina, which is where arch should peak."
Lastly, line up the pencil at the end of the eyeball to mark where the brow should end. Then, just connect the dots to map the perfect brow for your face.