i dyed my hair dark brown but it looks black that was about 6 weeks ago and now my roots are coming through can i dye my hair back to as close as my normal colour which is light brown ??? would it couver the darker bits in my hair ???:(

In order to go from black to light brown hair, you will need to pre-lighten your hair and then apply the desired color. Anything other than that will result in a red/orange shade.