Thank you, Bill.

In order for this to sink in properly, I will now endeavour to recreate in Matmatic code your eye shaders for PR2.  I feel that this will be the best way to be able to see shader functionality properly: break it down into code. Oh, and I will be putting gamma correction code in all my projects from now on.

I've been thinking about this all day.

Another thing I want to do is change how freckles are distributed on the face. I've observed that their distribution and density tends to vary a bit as one comes down the face. There's less on the jaw and chin, whilst the heaviest concentration seems to bee on the cheeks and nose. I found your freckle mask - can't remember from where, probably RuntimeDNA, and intend to use it.

The pseudo-code or whatever ya wanna call it?

Well, for one thing, since the freckle texture based on Spots is going to be affected by the mask, I won't be tying it into the baseTone anymore. Can't have masked areas no longer affected by Spots also missing that ltBlue tone. The colorMap will have the ltBue color multiplied in.

Remembering your suggestions for makeup for VR3, it will involve a blender node, to which the spots and the freckle mask somehow tie in.

Thinking out-loud, here.

Been a busy day in recovery, so I'll need to just sleep on it for now... I'll let you know how I go in a day or two.

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