I have tried Casting Creme Gloss Butterscotch twice. Does not cover grey at all and once the color did not change at all. I have used other L'Orealproducts with success and other products with no problems. I told Loreal of my problems but the response was to blame me for my type of hair and told me to go to a hairdressers and have my hair colored even though I told them I had had no problems before.