I bought some Vegetable Glycerin from my favorite place, luckyvitamin.com. I got Natures Answer Extrac 4oz. After the first use I saw a change from a white tongue to a light pink one. I used my tongue brush. I would imagine after a few days of use my white tongue will be completely gone. I wish I read this a long time ago. I currently use Dr. Katz toothpaste and Motuhwash. It works but doesnt last as long as it states. Maybe the Dr. Katz and Vegetable Glycerin combo will eliminate the bad breath.