Technique very flattering to human skin tone.
Rongnongno wrote:
Open the original in two different documents.
In one set the mode to YMCK mode
Select channels
Select Cyan
Create a selection (Ctrl-click)
Create a mask (use the mask icon)
Undo the selection (Ctrl-D)
Select the mask (Ctrl-A)
Copy it (Ctrl-C)
Switch to the RGB document
Paste the selection (ctrl-V)
Set the blend mode to soft light
Adjust the opacity
You are done.
Do post your results... Or try it with your own images.