An easy way to relieve the pain when plucking eyebrows is to rub a small amount of toothpaste on the brow for 5 minutes before you begin plucking. This acts as a mild numbing agent.
Use a cotton swab then put benzocaine topical ointment like that of orajel or anbesol on your eyebrow and its surrounding skin and let it make your skin become numb. When you can feel that it is getting numb already, you may start plucking until you get rid of all the hairs. In putting the ointment, you must be careful not to put it accidentally on your eyes because it would really affect your eyes.