Australian teen sci-fi series with high-tech shower removing hair dye which it considers as dirt in the person's hair [duplicate]

Question

In the 90s I remember seeing a sci-fi series. It was a teen show with young actors and I think it was Australian.

I recall some kind of high-tech shower that removed hair dye because it considered it to be dirt/a contaminant in the girl's hair.

I think time travel was involved.

It was broadcast in the UK.

Answer 1

This is The Girl from Tomorrow (1991), specifically Episode 1, Season 2 - A Time Without Vegemite

Jenny: The colour's gone!

Alanna: The scanner thinks the dye's dirt and removes it.

Jenny: At least I don't need a hair dryer.