I have a client who had Majirel level 8.0 full head colour. She is a level 7 naturally with 100% grey regrowth. Before this she had bleach highlights with level 8 in between but wanted to lose the bleach altogether. I pre-pigged first and then covered with target shade 8.0 and 20vol. She said after 2 weeks the colour had washed out. Never had this happen before. I asked her to come in so I could take a look and it was more of a level 9/10. Any ideas on why this may have happened???? Tia