Review on Wella Color Tango 4NB Medium Neutral Brown Permanent Hair Color by Renee Foreman

I was very disappointed I had 6NN prior to this purchase which due to my red to auburn hair gave a very natural brown with a slight red cast. 6NN was the perfect natural shade but I was recommended 5BB, left it on for 20 minutes and my hair was black in 10 minutes. This 5BB shade is literally a brownish black, which I didn't want at all. It's too dark for me and now I need to figure out how to get back to level 6 brown without bleaching and damage. On the plus side, I have a very sensitive scalp and the Wella Tango line doesn't irritate or burn like other hair color brands, and the color changes faster than any product I've used before. .