About the marker/pen brand used for Meet & Greet signings

Upon returning home last night I realized that the gold-glitter-colored signature on my rolled up vinyl print transferred off to the back of the print in some blotches. And I had just taken 8 minutes to blow dry it with a handheld fan that staff kindly provided too :(

Looking to see if anyone can remember the pen brand used for Meet & Greet signings or at least the ink type, as I’d like to use one that doesn’t dissolve the markings like some horror stories I’ve heard.