Original Author: Photoshop Girl
Link To Tutorial: Here (Not located on this blog)

Result:

“Tip #1: If you find that this enhancement is a bit too strong for your photo then there’s a way to fix that. First you need to select the entire image by click Ctrl + A then hit Ctrl + C to copy the image. Go back to the original version of the image and paste it by hitting Ctrl + V. This adds it as a new layer to the original and you can change the opacity of the layer in the layers panel but using the opacity slider.”

“Tip #2: Like I mention in the tutorial, Channel A represents Green and Red colors while Channel B represents Blue and Yellow colors. If you feel that there is already in enough red in the photo, say in someone’s skin, you can just add the adjustment to the B channel to add some yellow to the skin to help neutralize the red.”