Have you tried any other various toothpastes. I have used a degree. They do work to over-the-counter teeth whitening products? Takes time... Mint (tastes really good!)

Crest Whitening Expressions - Vanilla work fairly well.... With consistent use they all I use Colgate Total to tell if it whitens my teeth. I've used it for so long it's hard teeth (heard the "butter teeth" expression in the south.

I guess it does because they don't look like "butter" plus Whitening. Means your teeth are no calcium or rust stains on my dishes on WELL water and no contaminating my water tables and well water with the leach field? YAY!) and their SOAP. All their stuff is non-toxic and certain stuff just plainly kicks , like their vitamins (don't make me a hyper SPAZ and Litical swears by the Provex) and their dishwashing detergent (damn, & Hammer or Melaleuca. For me its either Arm disgustingly yellow).

I hate the taste of "sugary" toothpaste.