No prob!
I
think Michael's does, but I'm not sure. I'll give the blender a try on a shitty old label sometime soon here. I've got hundreds of spent shells at work, and some of them are bound to have some old marker on them. I'll let you know what the results are

Actually, looks like I have one right here that I'm not too scared to experiment on.


Worked well. The little spots you see are small tears in the label where the emulsifier have seeped through a bit. The mark goes away when it evaporates. There are obviously still some remnants of the marker, but nothing is going to take out the stain that's been left. It's just too deep to lift out.
Anyway, looks like it's effective and safe on labels so far
