This stuff, especially when used in conjunction with Micro Sol, is just unbeatable when it comes to fitting realistic-looking decals. I have tried others such as Humbrol Decal Fix and setting in Klear - they work okay, but this one is far better imho. For example, I recently built an Airfix Boston MkIII and the wing roundels, applied using Sol/Set, really did look like they were painted on, with the decal showing through all the rivet detail on the wings. Really stunning results. Highly recommended.