If your density is below 100%, we do not advise a polyskin perimeter. It's okay if the entire fromt half is polyskin, but you may see the demarkation through the hair if you combine a polyskin perimeter with lace etc and your density is light.

Poly-with-gauze does not share this problem. Polyskin, while very thin, tends to reflect light differently so that's why you can sometimes see the demarkation if you combine it with another material.