It didnt cover my greys well. I used clairol nice n easy. The colour was more or less the same colour as my natural colour just a fraction abit darker (im a redhead/auburn/copper head). I did a strand test and my strand of greys didnt colour completely. So thought ill see what happens on my head. I left it on the maximum time but some of the greys is still there......what did I do wrong?? thanks