does liquid silicone dissolve or it's permanent
The preferred crystal is sodium chloride. Any other compound which is insoluble in the silicone, soluble in a solvent that does not dissolve the silicone, and which as a residue is harmless to the body, could be used instead. Water is the preferred solvent. Any other solvent which dissolves the crystals and not the silicone, and which leaves no deleterious residue, could be used instead. The properties of this foam will be improved, for the reasons stated above, by using a plurality of crystal sizes.