Honestly it takes about a week or two to really see the results of a shampoo and conditioner. Nothing works overnight, the same for when it comes to skincare. So makes sense that haircare is no different.
Over the summer I dyed my hair and wanted to get some ultra light highlights and my hair turned out orange, literally orange hair. I went to get it dyed again to brown and spent like a million dollars and it started fading to burgundy.