When it comes to sealing Gelatos artwork, it generally depends on the application.
A light application would be a basic watercolor technique. This could be sealed with a simple spray fixative.
A heavy application would include some of our mixed media techniques. If there is a thicker application of Gelatos on the page, a gel medium or glaze would be recommended. The user should be careful when applying to avoid the Gelatos from smearing or moving on the page.
We always recommend testing small samples to make sure you are achieving the desired result.