If you had a bad reaction to JFM, then you likely have an allergy to one of the ingredients, and it will probably be difficult to find a dye that doesn't contain it.  And from what I've read, regular hair dye doesn't work that well on facial hair.  A greying beard is something we all have to come to terms with.  And it sure isn't easy.  I really hate the ever-increasing grey in my beard,but I'd still rather have a grey beard than none at all.