Quote - Note that the trick in EZSkin is not providing conservation of energy (even though it is intended to). It is using the output of one lighting node to change the attenuation of another one, which is not how real surfaces behave. Skin doesn't change its specularity based on how much light you shine on it, and it especially does not change the amount of diffuse or scattered light it reflects from light source A based on the angle of light source B.

But the EZSkin CoE isn't working on attenuation?  The only thing that affects the EZSkin specular is either a real or an auto-generated specular map.  If you mean icandy265's Edge Blend, which also has a generated specular map fed into it, that's not CoE.  The equations I posted are exactly how the CoE is handled.  No attenuation or angle involved.