Originally Posted by R_Fredrick_Smith
With RAW you are changing the WB for the entire image. His problem was selectively changing the skin tones of the model only, but not the whole image. RAW will work as one of the tools. You process the image twice, once for skin tones and once for overall image and then you combine them with one above the other (on a layer). Then you use a layer mask and brush on the skin tone from the good skintone one to the layer with the overall good wb.
The above is essentially the same process I mentioned earlier, but using RAW to create the layer rather than curves. Often times the method I gave earlier is easier because you are not so much dealing with color balance as you are how dark or light the skin color is. You can use curves to adjust this very easily and then selectively use the layer mask and brush to get everything in balance.
First let me say, your step by step instructions are nice, and they are useful.
I assumed the OP knows some PS, I was giving him an other option and figured they could figure out the layer and masking. I generally assume people know something, and that if they don't they will ask for more details.
The wb, and tint combo could offer more tweaking of the skin color than the curve adjustment.
Sometimes finding the treasure is more fun with only part of the map!