Again, why are you using double sided polygons? Meshes can be open in UE4 (it’s awesome because you can save a few polys that way). You can’t see the underside of a hair mesh unless it’s not shaped to fit the head properly or it’s dynamic, in which case it will bop in an out of view constantly anyway. So you can make a ‘shell’ that is open on the camera side and therefore invisible to the camera. Also, just to point out an odd fact, how many video game characters have long hair hanging loose vs. How many have ponytails? LOL I think most have ponytails or some other justification for NOT having hair in front of their face. Probably for this very reason.