It could be related to what i eat. I dont really eat much red meat but i know what you mean. And i always make sure that my food is at a sufficient temperature that it wont burn my tongue lol
Its ok though , i have been trying this mouth wash which contains aloe vera amongst other things. I use that and scrub my tongue at the same time . I have been doing that now for a couple of days so i am hoping to see a change if not an improvement.
I do get dark patches on my skin though. So i am interested in that soap you were talking about. What is the name and where cn i get it? does it work on old dark marks / patches on the face and body?