Used to use these a lot when doing watercolor, mostly liquid mask, never seen liquid frisket back in those days but wld have to assume there pretty much the same, perhaps the adhesion property is a bit different, perhaps liquid frisket may be a bit easier to pull of..Dunno..I think it will only pull paint if the paint adhesion isn't really strong (pending on surface) or if its placed on a pretty light coat..If you heatset the prior layer before using it, perhaps it won't remove the paint to easily..The main thing I dont like about it is it can leave a gummy residue behind and if you leave it on a little long well it makes it extremely hard to get off..Haven't used it for many years though so perhaps its a bit better these days..Cosider using bluetak/playdo if ya want to mask hard shapes, its easy to shape, and will come off really easily but will also leave a residue but very little..GL