What can I do about the shadows in this alpha texture?

Title says it all. The hair here is a png with alphas but it casts weird foggy shadows on the head. What can I do to fix this?

Enable ‘Receive Transparent’ in Shadows panel of the head material properties:

I did this and it made no change.

Would you mind posting the alpha texture on here? Usually doing what acklavidian said will fix this problem so Im curious if its your alpha hair texture thats causing the issue…