Might be on to something?

I'm thinking of using a group of Blender nodes to daisy-chain my "glossy" nodes (not literally the Glossy node, but nodes to put gloss on lips and on eyeshadow) like I'm daisy-chaining my masks and colours.

I'm going to bed now, but I'm going to work it out in Matmatic and see how it looks - see what you think. I actually mucked around in the mat room for once, trying to see what Bias does to the Specular_Value channel in Specular (node, not the channel on PSurface).

I think I see a light here. More like a glimmer, but it has a wee bit of gloss on it.

Edit: re-reading that Bias and Gain section you so painstakingly put together....

Monterey/Mint21.x/Win10 - Blender3.x - PP11.3(cm) - Musescore3.6.2

Wir sind gewohnt, daß die Menschen verhöhnen was sie nicht verstehen
[it is clear that humans have contempt for that which they do not understand] 

Metaphor of Chooks