I used it before dyeing my hair with Itís Pure Dark Brown to help the indigo to ęstickĽ. Before my grey roots turned reddish after a couple of washes, and I was recommended to try this to be sure my hair was totalt clean before dyeing it. I have tried it twice, and now the indigo hardly sticks to the hair. It is kind of orange when I am finished dyeing, Even worse than before. So it did not work for me. Wish it was, though. I would really like contiuing using plant colours.
This prep color is great. It's a mud and you need to leave it on your hair for 15 minutes, then wash it off and dry before applying henna. It made a huge difference. The henna colour covered completely my grey hairs. Never had such a good result before with load of different clarifying shampoo! Highly reccommended.