On 12/07/2019 18:53, Andrew wrote:
On 12/07/2019 18:44, Harry Bloomfield wrote:
dennis@home used his keyboard to write :
Yacht varnish?

Clear self adhesive window film?

They are polycarb I think, so what ever used needs to not attack that
material - could be expensive if it does make a headlight lens craze.

Mine are sort of OK, but could do with a polish up. I bought a kit,
which included sachets of some cream which was supposed to retard the
hazing.


I would be tempted to try Foam Gun Cleaner, which is acetone.

I use this on my white upvc windows when spiders and other
insects leave brown stain marks.

Seems to work a treat.

Really bad advice to put acetone on polycarbonate. Google it.