What is an isolation coat?
An isolation coat is a coat between your finished painting and the varnish.
It is transparent and creates a physical separation between the varnish and your painting.
This is key because otherwise the varnish will stick to your painting and be a nightmare to try and remove. The varnish is not permanent, it just acts as a dust collector that you can remove and replace, every 5 to 10 years depending on how dusty the environment your painting is kept in.
To make an isolation coat I use GOLDEN Soft gel gloss. This medium is off the hook, and I highly recommend you buy it along with an Acrylic Glazing Liquid Gloss if you are starting acrylic painting. These bad boys are all you need.
Alternatively, Golden has recently released a pre-mixed isolation coat you can use.
A full-gloss finish can do amazing things to your paintings…