Skinliner - The Ultimate Solution for Smudge-Free and Long-Lasting Eye Definition! The Purple Flame Skinliner is a pre-drawing pen for henna brows, microblading and PMU in the eyebrow and lip area. Its thin tip allows for precise and clean pre-drawing of eyebrow hairs as well as the eyebrow and lip frame. Because it dries quickly, you can start working straight after pre-drawing without smudging.