quite a few years ago, when my daughter turned 16 I let her take my new car to school. After school her and her best friend came to the house, it was on a Friday night. When daughters friend got out of the car she was shocked to see that she had , had a pen in her back pocket and it broke all over the car seat. She was devistated, not wanting to make matters worse and spread the ink I waited until Monday when the car lot was open . He said he had no idea what to do, but to try K2R spot remover. It took every bit out and you could never tell there was a huge ink spot on the seat. I haven't heard of it in years. Hope they still make the product. That was 16 years ago