Saving 30 to 50pct buying in bulk replenish-able items from toothpaste to soup or whatever I use a lot of is the best guaranteed return on investment you can get anywhere.

FORBES: Where To Invest $100K? Five Billionaires Share Their Ideas

Hedrick says it could also be a safe alternative to the ubiquitous use of various antimicrobial chemicals in products like toothpaste and cosmetics.

FORBES: The Semi-Conductor Tech that Could Eliminate Superbugs

The health project teaches children how to brush their teeth properly and it includes the use of fluoride toothpaste.

BBC: Tooth decay in children too high, says chief dental officer