Acid-free, fade-resistant, dye-based inks in a wide variety of lovely colors you don't usually find in your local craft store.
We recommend no more than 4 colors for the trees (including one for the birds) and no more than 6 colors for the big balloons. But trees can also look great with just one color.
This ink dries quickly, so you needn't worry about ink getting on guests clothes. Most of the colors wipe away from hands completely, if removed with a baby wipe immediately after stamping.