Need Help : Helmet Nose Guard (安全帽鼻罩)

My AGV Stealth helmet visor got fogging problem during heavy rain and it is quite worse, I did try to apply some anti-fog spray on the visor but useless. I did remember some owner review their new AGV helmet come with a nose guard. I wonder with putting the nose guard can solve my problem? Please give some advise to me ?  Thanks.

[ 本文章最後由 wildspirit 於 2010-9-19 20:50 編輯 ]

or you need anti-fog patch?

you could show us pictures of the affected helmet parts , else i dont know what make the helmet is...