Tube of Clinomyn smokers toothpaste with box, 1971-1975.
© Science Museum / Science & Society Picture Library
Special toothpaste helped remove stains on the teeth caused by smoking. Toothpowders and toothpastes are thought to have been used as long ago as 500 BC in China. They did not appear in Britain until the late 18th century, and were applied using brushes by the rich, while the poor used their fingers. Many of the early powders probably caused more harm than good, as they contained abrasive substances such as china, brick dust and cuttlefish. Made by Trentham Laboratories.