Dentifrices

Claim 1

A clear dentifrice comprising a dentifrice vehicle containing from 5% to 50% of a polishing agent having an empirical SiO 2 content of at least 70%, a particle size in the range from 1 to 35 microns, an essentially amorphous X-ray structure and an index of refraction between 1.44 and 1.47, a liquid phase having an index of refraction matching that of the polishing agent to permit clarity of the dentifrice, the liquid phase including humectant, a solid phase including a gelling agent or a thickening agent or a mixture thereof, a compound which provides from 0.01% to 1% of fluorine, selected from alkali metal fluorides and alkali metal monofluorophosphates, and from 0.1% to 5% of a surface active system comprising narrow cut alkali metal lauryl sulphate in which the C 12 content is at least 90% and a further anionic surface active agent selected from (a) alkali metal salts of a substantially saturated higher aliphatic acid amide of a lower aliphatic amino carboxlic acid compound, (b) alkali metal salts of a substantially saturated higher fatty aliphatic alcohol alkylene oxide sulphate, (c) an anionic phosphate esters comprising a mixture of a monoester of the formula ##STR4## and a diester of the formula ##STR5## wherein R is an alkyl group of from 10 to 20 carbon atoms, n is an integer from 1 to 6 and M is hydrogen, an alkali metal or ammonium and (d) mixtures thereof, the amount of the alkali metal lauryl sulphate being greater than the amount of the further anionic surface active agent, the ratio being at least 3:1.