Fascolor Magic Eraser
Ever get a bit of blow by or have a bit of fascolor bleed through your masking job?
Okay a budget tip I use all the time...Wooden Kabob Skewers. Grab them from the dollar store usually in a package of 50.
If you dull down the tip slightly it makes a great eraser for fascolor (if it's still curing or setting up). These little screw ups appear when you go to do your next color so grab it while it's fresh. The fine tip gives you enough control to fix the problem and move on fast.