National Geographic : 1923 Jan
Your Future Self In a few years you will be a new person. Every thing about you, except the enamel of your teeth, will have changed. Be fair now to the person you will be. Read here n why it is important.to protect the enamel of your teeth by using a safe dentifrice. Emel of Your Teeth s Ilnot restore it e familiar theory that everyone becomes a new person ry seven years is supported by scientific authority.* An injury to the flesh, the bones, the eyes or other organs may he healed by Nature, but the thin coating of enamel upon your teeth never is renewed,once it is broken or other wise damaged. Then tooth trouble is almost sure to begin. So select your dentifrice carefully. Choose a safe one which will wash and polish the enamel, not one which will scour with harsh grit. Colgate's is safe-based on fine precipitated chalk and pure vegetable oil soap. The chalk loosens clinging particles from the enamel, the pure vegetable oil soap washes them away. COLGATE'S CLEANS TEETH THE RIGHT WAY "CWashes"-andPolishes-Doesn't Scratch or Scour Protect the enamel of your teeth and be fair to your future self by using Colgate's regularly after each meal and just before bedtime. Large Tube, 25c i *See article on Biology by Professor William Keith Brooks, New International Encyclopedia, Vol. 111, page 90.