So I saw Wunderbrow appear in my Facebook feed (an ad) and found it on Amazon. It says it's truly waterproof, lasts for a few days and contains hair-like fibers to make it look more natural. Anyone have a real live testimonial they can give for this? It's not terribly expensive, but at $22, and on the ninth or tenth eyebrow pencil that doesn't stay on for even a few hours, let alone swimming or exercising, I'm kinda deep into the makeup costs. I have one eyebrow almost gone so I have to match it.