I've had to put my SSS learning aside for a while because of another project. I spent about four hours with trial and error on a closeup portrait lit with HDRI and two specular spots. I've begun to get some good results on skin tone but not worthy of showing.

I am no one special in this realm, I'd encourage all to set up a test portrait of your favorite model and have at it with the SSS shader and various light combinations.

::::: Opera :::::