Like Bence, I use FX-100 for enhancing the gloss on my black paint. I often use it as a topper to my lsp & for a post washing "boost". I've also used it after I've applied a base of AIO, sanwiched between AIO & my carnauba lsp. Recently, I've used FX-100 as a base for DG AW. ( incredible combo, by the way ) FK describes FX-100 as a " one step sealant glaze engineered from a blend of high grade poly resins and organic and inorganic waxes formulated into a spray system. Combined with air dried resins that are cationic in nature FX-100 attaches a protective film to the surface that creates a hard, long lasting finish."
Is FX-100 a "glaze" in a traditional sense? In my opinion, it's not. I would describe it as more of a "finishing glaze". Like Bence said previously, don't over apply. Use 1 squirt per panel & work it in until there's very little ,if any, residue to remove. FX-100 melts right into the paint when applied properly. I've only had 1 or 2 instances of streaking which was quickly eliminated with a pass of FK#425. Just a versatile product which can be used pre or post lsp. ( pre & post carnauba lsp - post sealant lsp due to it's "oily" nature, IMO )