I have coal black hair, and I have never used any hair color on them until now, but still my hair is dry and has a lot of split ends, which seems to come back even after trimming them. I read a lot of great reviews about Joico hair products to bring back the shine and volume to hair. However, I am a bit apprehensive about using them, as one of my friends had blonde hair, and she used the reconstructing shampoo from Joico, but it changed the color of her hair, to some dirty yellow. I am a bit hesitant in using it, and therefore, would like to get some expertâs advice on using Joico hair products. Can somebody please assist me? I shall be thankful to you for an appropriate advice.