Just got reminded of once when I was studying. There is a shampoo brand in Norway called “Fruktis”, which in it self is a pretty weird name for a hair product. I picked up a new bottle of this and used it during the week. At the end of the week i noticed how greasy my hair was, eventhough I had washed it thoroughly. The weird thing was though, it was surprisingly shiny. I looked at the bottle and it turned out they have several different products in pretty similar bottles – I had been cleaning my hair with conditioner!