The no-frills product has a thin brush tip made of ultra-fine fibers, which allows for ultimate flexibility. With just one glide, you get a pigmented line that doesn't tug or pull. For those who just suck at applying liner (like me), you will likely find that this is easy to get right on the first try — something I discovered after testing Pro Tip at my desk using a tiny tabletop mirror under possibly the worst lighting situation. There was no need to take out the Q-tips for correction. The best part is how the pointed tip hugs the lashline, making the application basically foolproof (even for someone who's too afraid to apply eyeliner on a regular basis).