21-05-12, 12:08 AM
Another supporter of the damp kitchen roll soak technique here.
If the visor's greasy I'll use washing-up liquid... salt is soluble so doesn't scratch the visor. (The reason you don't use it on vehicles is that it accelerates rusting.)
Soap, on the other hand, can deposit calcium carbonate (same stuff as in abrasive creme cleaners) if you have hard water, which will leave smears or cause scratches.
If the visor's greasy I'll use washing-up liquid... salt is soluble so doesn't scratch the visor. (The reason you don't use it on vehicles is that it accelerates rusting.)
Soap, on the other hand, can deposit calcium carbonate (same stuff as in abrasive creme cleaners) if you have hard water, which will leave smears or cause scratches.