Thank you! I am glad you like it.
This setup works best with relatively small shapes when DISPLACEMENT AREA/STRATA AREA size is between 1000x1000 and 3500x3500. Beyond that size, the mask will slowly revert to an unwarped form of any SSS that you are using as a mask.
I'll probably post a version that works with larger values too. Meanwhile, consider this - the larger mask (DISPLACEMENT AREA + STRATA AREA) you are planning for, the higher the values in this network should go.
Let's say you are planning for a DISPLACEMENT AREA of 10000x5000. It would be prudent then, to increase the "final multiplier" value in the "vector displacement shader" to around 10000 as well. The SHAPE fractal size should also be increased. This way, the mask will remain nicely warped.
Well, actually the values might be different because I'm speaking out of my mind. But the general principle is accurate.