This is driving me crazy today. The only place I got a weird blue glow on my latest work is with two hands intertwined. It's a very important part of the image so I want to understand what is going on.

Here is the cropped area in question:

The skin on both hands in the material room:

M4 Skin Hand:

V4 Skin--Hand:

Nail for both:

I am using a HDRI light on the background node, no other light. My units are feet.

Any ideas? Thanks in advance, this literally just happened right now with this render and I can't fix it.