Set the white bal correctly to the light source. I use a Whi Bal card in a picture or custom WB made from the card and save it as a camera profile. $25 at B&H, get the big one.
Make sure you are working in 16 bit. 8 will not make smooth transitions. Ie becomes blotchy.
If it is just a flesh problem, then use the adjustment brush on the faces. Do this before adding any saturation.
You will find it is really not a flesh color problem. So here are the full steps.
Calibrate the monitor
Set the WB
Make a camera profile with Adobe profile editor. You will need a color checker or passport color checker. this is a free item from Adobe labs. This neutralizes the color bias Leica builds into the camera attempting to make the image unique. But as you discovered, colors you do not want changed get changed.
ACR and probably LR can be set in preferences to establish that profile as a preset based on camera serial #. All my cameras are profiled and all give very close color, Leica and Nikons.