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umm... , not sure but i think the original toothpaste is "safer" to try than the whitening or tartar control. just because the original is probably not as "strong" as the other two. but you can always try a small amount of whitening toothpaste and apply it to a small hard to see area. then you can compare the two. i'm sure you don't want to your exhaust tips look whitened . now we are more like the scientists who testing out all the toothpastes .