What can I do to ease the pain and stop the swelling of a ingrown eybrow that has almost swollen my eye shut?

If you tweeze your eyebrows it may result in ingrown hair, and the hair follicle gets swollen and irritated. However, the swollen is temporary and will subside in a day or so. Try using an aloe vera-based gel to soothe the irritation. You might consider waxing your eyebrows. When you remove eyebrow hair with waxing your results will last about 4-6 weeks.