Glass is rarely perfectly clear on a well-used subject, and this Glass Coat gauzy agent lets you add that touch of realism. Brushed onto canopies, windows and lenses it creates a hazy, gauzy film, perfect for grime, condensation, frost or age-clouded glazing.

Build the effect up gradually to control how translucent or opaque it reads, layering it until the glass looks convincingly used rather than factory-fresh.