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.

Decal Fixer

Content: 1x 17ml bottle

In 1940, the British Air Commission (BAC) approached U.S. aircraft manufacturers about purchasing aircraft, particularly fighters. Curtiss presented their model 81 and planned P-46 which the BAC later ordered 480 model 81s and 960 P-46s. Lockheed presented their YP-38 prototype. North American Aviation (NAA), who as of yet had little experience with fighters, drew up a proposal for a fighter that they insisted was to be at least as good as the P-46. The BAC required assurance for NAA’s claims and that each aircraft be less than $40,000 each. Eventually the BAC ordered 400 of NAA’s fighters, even before a design was presented. The company's lead structures engineer recalled that Edgar Schmued had given the subject of a single seat fighter a great deal of thought in the previous years, called the P-51. NAA’s design team and Schmued were determined that the aircraft would be cutting edge. By the end of 1940, the first prototype, called NA-73X or XP-51, was ready for flight.

I was in college when Revell first released their 1/32nd scale rendition of the AH-1G Cobra Helicopter gunship, at that time being actively used in the Vietnam conflict. I am forced to admit that I was enamored with the sleek and deadly look of this machine, and the fact that Revell had released it in my favorite scale only made it more desirable.