Is royal toothpaste decanted three hours before it is used?

I have ignored the royal scandals until now. Mainly I have done this because as an Australian republican, I keep my head down on issues involving the royal family in Britain. However, the Times this morning reports this alleged fact about the Prince of Wales.

There was a story yesterday that his beloved aide, Michael Fawcett, is the only person who knows "how to load his toothbrush the way Charles likes it".

This is complete hearsay, and the source is not given, but this is so bizarre that I tend to think it must be true.