a product to apply on plastic face safety shield ,to keep static and fog from clouding the shield.?

For the inside of the sheild you should try sight savers by bosh/lomb. I work at a food plant for sanitation they have tons of trouble with keeping sheilds and goggles from fogging up. Uvex also makes a product for fog....I would suggest nothing honestly for the outside of the shield as anything...especially petrol based...is going to cause the particulates to the shield..just keep the outside clean...using windex to remove any grease residue.

I haver this stuff called "static guard" it says you can use it on computer parts and tv screens so it should work for you.

And fog? like on the inside? I used this stuff made for paintball goggles, I think it was just called "anti-fog". It works really well