National Geographic : 1921 Aug
'ii~~_ The scientifically correct tooth paste -made for you by the makers of Listerine SISTERINE Tooth Paste contains a small amount of a pleasant, mild fruit acid derived from the grape. This fruit acid assures that adequate saliva flow which helps Nature keep your teeth sound. Note how your mouth waters when you brush your teeth with this delight ful paste and the fresh, clean, polished feeling it leaves. A very fine powder, calcium phosphate, is the cleanser. When you use Listerine Tooth Paste regularly you have that comfortable feeling of knowing your dentifrice has done its work and that you have taken the proper precaution against dreaded pyorrhea. LAMBERT PHARMACAL COMPANY, SAINT LOUIS, U. S. A. "Mention The Geographic-It identifies you"