GC Tooth Mousse PLUS is a delicious tasting creme that contains calcium and phosphate; the major minerals teeth are made from. Because calcium and phosphate are carried in a special milk-derived protein called RECALDENT (CPP-ACP), they are available in a soluble form. This means Tooth Mousse PLUS can provide extra protection for teeth, buffer dental plaque acid from bacteria in the mouth and also protect teeth from acidic foods and drinks.