Those are most probably Flat Warts. Whatever method you choose, you should make sure that the root is removed. Otherwise, the warts will just come back. I listed a number of options which you may consider to have them removed. It's in my blogspot (http://spaandfacialcarecenter.blogspot.com). The options presented will just vary on the treatment cost, treatment duration, discomfort, possible scarring, and healing duration. I hope it helps.