I have very long and very thick hair. My natural hair color is dark blond, I color since I can remember dark brown to black and now wanted to get back to my natural hair color. I must admit that my expectations were not too high, but I wanted to bleach under any circumstances and make me long hair broken, so a try wars worth. I've followed the instructions and chosen the long exposure time. Meanwhile, I have made 2 treatments and am very satisfied. Of course I'm not dark blond to the tips, but the first 10cm at the base come to my natural hair color is very close. Also, the residual has become much brighter. And the best part: my hair feel super !!! I wore absolutely no damage it and will definitely make a treatment. As I said, I'm not blonde ... But I had never expected. I am very happy with the result. And the smell: it smells like a perm, but the smell is gone after 3 washes. Me but he has not disturbed. After dyeing, I've smelled even after color ...