If you're going to do it at home, try taking a hot shower first so that your pores will be more open, and the hair in your brows will come out more easily when plucked. Also, try plucking them in the same direction as they're growing. If you get them done professionally, you have many more options. Waxing does hurt but the pain goes away very quickly, so I would recommend that. Unfortunately they aren't many options for painless eyebrow maintenance. For no pain at all but more upkeep, try buying an electronic eyebrow razor from CVS. Your brows will grow back very quickly but there is no pain associated to it at all.