Dr Heff's Remarkable Mints supplement to harden teeth
English Peppermint Xylitol Gum - 12 x 15g Pocket Packs...
Peppersmith Extra-Strong Eucalyptus 100% Xylitol-Sweetened Multipack Mints, Sugar-Free and Good for Teeth — 24 x 15g Packs – The Great British Confectionery Co.