I find all of the ProAiir inks to be awesome. They last a very long time in optimal conditions, but even if someone is swimming alot or sweats on a hot day, the designs do not dissappear or melt. If layered properly, the ink is not sticky like other brands. The colors are vibrant and opaque. They blend well to make different shades and tints. They do tend to separate, but with a quick shake, back together.