A question asked very often by photographers is "How do I fix red or mismatched skin tones in Photoshop?" As with everything in retouching there's hundreds of ways to achieve the same thing. So the question you're left with is, which is the most efficient method that has the best results. Here's the top three methods known to mankind, pick the one right for you!
This is by far the quickest method to take away any red color in the skin. I use this for red noses, and fingers. It can sometimes gives the unsaturated look though so be careful.
I find this to be the most accurate but a little more time consuming. I use this when hands are whitish and lighter then the face. Level has the ability to not only change color but also make something lighter or darker.
I've used this method on all different areas of the skin but I find it to work best for the bags under the eyes. The advantage of this over method 2 is it's fail proof since you are sampling skin. By sampling skin there's no guessing games involved.
Which is your favorite method? Feel free to share other methods in the comments!