Do I have to use new teflon tape before installing my new shower head?

Q:

A: I prefer not to use teflon tape because I don't like the look of the excess showing on the threads. I take a bar of soap and rub the soap into the first few threads. This method will prevent leaks and make it easier to remove in the future, plus the excess can be removed easily with an old toothbrush or equiv.

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