jessojohny: A colleague of mine had faced a similar problem. I do not think Vaseline will help you much. From what I recall, some medical creams were recommended to him by some doctor or may be by the people at department which does the finger printing. He continued to apply these creams and tried possibly four times over a period of two months. He was successful on the fourth attempt which was also supposed to be his last chance. Unfortunately, the person has left Qatar otherwise I could have got you more information.