Who here has used or knows about Zinsser Clear Varnish, it looks like they are part of the Rustoleum Group. Although the Zinsser company seems to have been around since the 1840's in the UK.
As far as I can see its a interior only product oil based Polyurethane Varnish, the website gives the standard info and I have yet to find any reviews on this product and its methods of possible application.

https://www.rustoleum.com.au/~/media...Australia.ashx

thanks