Shadows on Translucent Hair Cards

Hi. I’m using surface forward shading mode on a translucent material for the eyebrows of my character and whenever she’s behind objects or within the shadows from a movable point light, the eyebrows get this weird shadow exclusion. I’ve tried the other modes and I’m still getting the same problem. I also tried using the hair shader and what I got was just a noisier version. Hopefully, this doesn’t happen with hair or I’m going to opt for spline eyebrows and hairworks.