I got herba shine and dyed my brown hair, black. I did exactly as it said. I waited till late Sunday to really wash it just in case and since then the black just keeps washing out of my hair... Never again will I buy that stuff. Never I am so disappointed it said lasts 28 weeks HA! More like 28 days (if that). My hair looked and felt amazing right after I dyed it but it did not last at all.