| 摘要 |
Visually clear dentifrice comprising a water-insoluble aluminosilicate sodium salt complex in which the proportion of alumina is up to 3.3% by weight and in which the mole ratio of silica to alumina is at least about 45:1, as a polishing agent having a refractive index of about 1.44-1.47 and a gel vehicle for said polishing agent having about the same refractive index as said polishing agent, said polishing agent being substantially invisible in said gel vehicle.
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