I was using oil paints in art class and we were told to use turpentine as a paint thinner for the paints. I got some oil paint on my pants and used the turpentine to get the paint out (which it did). I now have a turpentine stain on my pants. I have washed them twice but the stain is still there. These are my favorite pair of jeans and are really expensive (I used my own money to pay for them as well). Please, HOW DO I GET THE STAIN OUT?