Bests & Worsts Reviews from Amazon

The product itself is good, and it was easy to figure out. You could probably get multiple uses out of one packet if it doesn't dry out. But this shade is definitely not a medium brown (pic for comparison to box). My hair is dark brown, and I was pretty freaked out by my eyebrows at first, as I felt this color looked very harsh on my face. It's been a week and a half since I used this, so the color has faded, and I think it looks a lot more natural now. I'm going to assume it most likely won't last for four weeks.