So I've got a bit of an issue.... Over the summer I got some G3s at a yard sale. I've finally gotten around to having a hardcore "spa day". These ponies were well-loved and they all have some marks on them, however, the I'm concerned about is a Pretty Patterns Royal Twist. Some of the paint has been smudged, scuffed off entirely around the edges of the hooves and she also has marks on top of her airbrushed details. I can live with missing paint for the time being but what concerns me are the marks on top of her painted details. I've tried a basic soap/water with a gentle scrub but these marks are the stubborn variety. It doesn't look like marker/pen or stains set in the plastic from accessories. It looks like it was transferred onto the pony from some other toy/item she was rubbed against or stored with.
Obviously I'm not going to try acetone and sunfading will just ruin the paint. I'm also worried that magic erasers will be too abrasive. Is there really any safe way to get marks off of symbols, eyes, and other painted detail while keeping the original pain intact?