I would go with len on this one, hopefuly I will be able to sample number 2 on headlinings as I believe nick is in the process of sending a bottle of solutions number 2 out to me. I would stay clear of using any sort of heat on headlinings not only due to shrinkage problems but most headlinings are fixed with a hot glue which is very tempermental to the slightest of heat before you know it you have a sagging headlining I use a interior cleaner with a spotting technique of dabbing with product & then rinsing, thanks