It makes your system sound overly bright, glare, etc many times. It can inject the worst aspects of using silver conductors into your sound. But not always... like silver plated wire it seems variable, sometimes silver plated wire is excellent, other times it's horrible and TBH I don't know why or when it'll happen. I've made mil-spec PCs out of 12g stranded wire, and it sounded great. Then I borrow a mil-spec PC made with a bunch of small gauge twisted pairs and it made my system sound horrible, just one PC pretty much destroyed my system's sound.
Unfortunately, this is the case with excessive Caig Progold as well, but it makes the system dark... it works but IMO the best way to apply it is to apply it normally then try to remove it all with a dry q-tip or cloth. Silclear is something I'd never recommend.