Oral care compositions consisting essentially of a Sea Salt, at least one essential oil, xylitol, and preferably, aloe vera juice and uses of such compositions to whiten teeth, reduce sensitivity of teeth/gums, and reduce xerostomia. In preferred embodiments directed to teeth whitening and xerostomia, the compositions also include coconut oil. Delivery systems for whitening teeth comprised of a strip formed be combining (i) one or a combination of teeth whitening ingredients selected from Dead Sea Salt, Cocos Nucifera (Coconut) Oil, Citrus Limon (Lemon) Peel Oil, and Salvia Officinalis (Sage) Oil and (ii) one or more gelling/thickening agents, wherein the strip is conformable to teeth surfaces and to interstitial spaces between teeth, without permanent deformation thereof, and is removably attached to a release liner. The strips may also contain one or more peroxides, metal chlorites, perborates, percarbonates, and peroxyacids.
