I've lost count of how many times I've bought this! My hair color is pretty light by default, so I love shade 03. When I first bought it, I bought it for the end of my brows. Since my brow hairs don't grow all the way to the end, I used it just to draw the end of my brows, but recently I've started using it to shade my under-eye bags as well. When people say, "My brows are so pretty!" I've been bragging and saying, "I'm really good at drawing brows!" But most of the time, they're using this shade, so it's not me, but Fasio's skill that's at fault. As for staying power, I only apply the eyebrow coat to the end of my brows, so I don't really notice it, but I think the eyebrow coat is a big factor in the durability. It's the lightest shade, but it does have a pretty strong pigmentation on my under-eye bags. I lightly apply it and then blend it with my fingernail, which creates a dramatic under-eye bag effect. My favorite four-character idiom is "kill two birds with one stone," so this shade is perfect for both brows and under-eye bag shading.