Maybe she used what she thought was bi-carb... she's scottish so could've thought it was different who knows. I might give it a go, it's not as bad as it was. We do use only QV oil in his bath but he still has the under chin/neck thing which is getting worse ... gets it behind his knees too and his wrist roll but only on one side lol. I have about 3 boxes of it so might give it a go! Thanks