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I got this floss because I was running out of my usual one. I thought it was strange that it was labeled 3D White because how can a floss really make your teeth whiter? I read a little of the product packaging and the claim comes from the fact that it slides into tight spaces more easily, therefore removing more plaque which can lead to more tartar. So it is just like any other floss, and just the act of flossing is what can lead to healthier teeth. I thought it might have some whitening ingredients in it or something but that is not the case! Just more misleading packaging.
Pic is mine