It says permanent on the very bottom on the box. You can see it in the first pic of you zoom. For me this hair color lasted about 3 months before my roots came in. The color lasts very long.
I have a choclate brown dye but it is partially used of you would like it. It is from Sally's and it comes with 2 uses. I only used one so the other one you can have, if you'd like.