Threading doesn't hurt!!! If I had to pick one over the other for pain, waxing hurts more. Actually, I don't think either really hurt, plus, as long as it gets the job done, I am fine with it-Ugh threading hurts!!!! What about waxing? Have you tried waxing? Its a little painful but much quicker. I think its normal to get little whiteheads and clogged areas after plucking and waxing. happens to me too. I pick at them and make matters much worse. Dab a little zit cream on the bumps to help dry and heal them. I dont know that they can be prevented.