Then to give the image back the ‘soft glow’ that they were going for on the film
Although the skintones are a little brighter all up, (and as I said I have pushed the effect much more than usual just to illustrate the concept) the real difference is in the range of tones in the face, the nose, lips and eyes now have more depth with stronger highlights to differentiate themselves from the rest of the face.
The idea is to make the subject look more alive, and less ‘pancake’.
I came across this discussion, and I thought I would share my Technicolor version: