First off, these are sleek looking pencils and they feel sleek in the hand as well, reducing hand fatigue That actually counts, a LOT. Secondly, LOVE, LOVE the fact that two lids are shaped in such a way that when you sit them down, they stay put and do not roll off the counter. That's a huge frustration buster for someone who doesn't have the flexibility she once had. Most importantly, though, they work well to simulate more lush brow hair growth with a minimum of effort. I am a fan.