I make my own. Much cheaper. Buy bulk myrrh, manuka, almond, peppermint, clove bud, and cinnamon oil. Use a small amount of manuka and myrrh, and larger amounts of clove, cinnamon, peppermint and almond oil. The hydroxyapatite should be from ground bones, not the nano bullshit. You leave that on overnight. It re-mineralizes your teeth.