A UK mum who happened to read the fine print of a package of toothbrushes for young ones discovered one incredibly simple tip that most parents don't realise - at least judging by the responses to her viral Facebook post.
If you don't know this trick, it is likely that you have been using way too much toothpaste on your children's toothbrushes.
It turns out that the coloured bristles in children's toothbrushes are indicators of how much toothpaste you should put on them.
"Tell me I am NOT the only one who didn't know that the coloured bristles on children's toothbrushes are 'toothpaste indicators' that tell you where to put it and how much toothpaste to use," mother Holly Benn posted on Facebook.
"I have totes been using too much," she added.