From the GSW Website, here are the use and application of these new items. I used them on my review build of a Supermarine Spitfire and you can see the results.
GSW Decal Fixer helps the application of decals onto surfaces of models, miniatures and dioramas. The GSW Decal Fixer prepares the surface with special agents that soften the solvents of modern paints making decals more resistant and glue stronger. In addition, the decal fixer makes the decal more flexible and increases the adherence, preventing the silvering effect.
Content: 1x 17ml bottle