Have you found out anything about what was going on? I have recently ran into the same thing... Any advice would be helpful. The thing about the lines in my hands, it couldnt possibly be dirt because my hands are always in water and never any dirt.
Why Do I Have Dark Lines In The Palm Of My Hands?
These are part of your print in your hand, all are different, some are deep or dark in color, and some are light and shallow. A palm reader would be able to better tell you what these mean and how they tie into your life. Hope this helps.
Perhaps you need a better soap. You should only have normal crease marks.