So this one's pretty straightforward, it controls how glamorous or unglamorous your images are, from totally ordinary at -10 to full glamour mode at 10.
The negative end gives you dull, plain, unexciting visuals. You know, that boring everyday look where nothing's particularly styled or attention-grabbing. This is where you get some of the most realistic photo results, turns out "unglamorous" just looks more real. (Who knew? /s)
Push it positive and things start getting stylish, elegant, attractive. The whole aesthetic shifts from "meh" to "oh damn" as you climb toward 10, where you're hitting peak glamour, flashy, chic, alluring, all that good stuff.
Range: -10 to 10 (drab to dazzling, basically)
Few layers trained so the file's tiny, but you still get smooth gradual transitions across the range. Just an easy dial for when you want more or less glamour without prompt gymnastics.