This is a great product which I have found does exactly what it says on the tin. However you need to use the whole tin in one go as anything you don’t use in one go will go solid. The reason for the one star is that I have just had a tin which was damaged when I undid the package ( which didn’t show any damage) The tin was dented and the lid was displaced. When the lid was removed the contents were solid. I am now in the process of returning a totally solid useless tin - a total waste of time for both me and amazon. Have reordered another tin but will open packaging before driver leaves!!