Well, I had been debating whether it needed it or not and then I was advised I should do it to make the helmet match my armour better.
However, after taking some advice here and on the Australian garrison boards, I have now stripped it down completely and using Novus polish and elbow grease, I have brought up a reasonably good sheen. So, the crisis is averted and I'm now ou naturale.
Well, I bought it in kit form and like the white armour look so thats why I wanted to go all glossy .. but the way I troop, I tend to become what I call a "natural TD" over time.
Anyway, thanks for the advice guys, you stopped me from making a grave mistake.