Not a fan because of the redness in it. I selected natural brown over dark brown because the latter looked even redder in the sample images on this site, while the former seemed more cool-toned. Well, it turned out redder than I thought.

The plus side is that since I have fuller brows, the light colour fills in the little spaces without being too heavy and gives an overall clear and natural look compared to e.g. darker brown that is closer to my hair colour. But up close the redness makes it look so unnatural it bothered me a lot... you can't have it all I guess.