A sty is a lot like a pimple. It's swollen, red and sometimes painful, and it gives you that same sinking feeling when you look in the mirror. The only thing that distinguishes it, really, is its particularly sensitive location. Sties are the result of an infected oil gland at the base of the eyelash. You can get more than one sty at a time or several in succession because the infection can spread from one hair follicle to others. Infection can occur, for example, when a contaminated mascara or makeup brush gives bacteria a free ride into the oily pores along the lashes. People who have super-oily skin or scalp may be sty-prone, just as they may be acne-prone, according to Kenneth Kauvar, M.D., assistant clinical professor of ophthalmology at the University of Colorado School of Medicine in Denver and author of Eyes Only.
1. Drain, don't squeeze.