ColourPop Brow Boss pencil defines and shapes brows with ease. The waterproof formula ensures brows stay put, offering long-lasting wear for up to 8 hours. A precision tip allows for creating fine, hair-like strokes, while the built-in spoolie blends and shapes for a natural look. Infused with Panthenol, this brow pencil strengthens and conditions brow hairs with each application.