Also as for masking fluid, pretty much any other brand will work more or less just the same, they're all liquid latex, just thinned slightly different and with different color tints in em. You can add your own acrylic paint to tint em yourself, few drops at a time till it looks how you want. Personally, I just buy some bulk liquid latex and then thin it with water and add acrylic purple paint to it, makes a pretty good approximation of Maskol. It can still be good to have at least a bottle of the branded artist stuff though, as it does flow and dry a little better.