I also did laser for a few tiny ones when I had laser to remove the 斑 on my face. The tiny ones do not come back but I believe if my health condition is not good I may have tiny warts on my face (other part of the face). The ones which have been cured would not come back. Luckily, I do not have any warts on my face at the moment.
用冷凍, 我有一粒(中型), 冷凍後大約一星期後"蕉"會脫落, but since I did it in winter, the humidity was very low, it took about 4 days and the "蕉" 便脫落, after that I put on cream given by the doctor on the affected area.