When our ancestors began to brush their teeth, they couldn’t run down to the corner market for a plastic toothbrush. In fact, the first toothbrushes ever weren’t in use until the 7th century and were made from bone, animal hair, and bamboo.…
When our ancestors began to brush their teeth, they couldn’t run down to the corner market for a plastic toothbrush. In fact, the first toothbrushes ever weren’t in use until the 7th century and were made from bone, animal hair, and bamboo.…