That's more than likely an oil-based marker. Acrylic is water-based. Any topcoat that you use over that Sharpie (lacquer, polyurethane, moisture cure, etc) is going to melt it.....unless the topcoat is water-based. Like I said, I've sprayed all kinds of stuff over them just to try to dissolve it....with no luck. Haven't tried water, tho.