FLAVOURS AND GUMS
- Flavours - the natural oils and flavours used in oral healthcare products include wintergreen, eucalyptus oil, menthol and thymol. It has been suggested that natural oils may work by reducing the levels of bacterial toxins in the plaque. [Mandel 1988]
- Gums - various gums are used to thicken toothpaste, but also to retain moisture, so the toothpaste does not dry out if the top is not replaced.