it takes time. And something else people mentioned is the 5% POVIDONE IODINE-for eye, I could not find the version for eye in my place, but I tried the 0.5% for mucus, (make sure it's not with alcohol). It's very irratative, and I washed it out immediately with clean water. But it helps. You have to be very careful with it. Eye surgeons use it for sterilizing the eye before operation.