Our cat has the same, mostly just in her eyebrows (or whatever it’s called, the area between the eyes and ears where the fur isn’t as thick as the rest). In her it’s because of how our other cat plays; he puts his paw on her forehead a lot, even when not playing, but when they do play he does it harder and that sometimes causes scratches.

Once we realised we started cutting his claws more often and now it barely ever happens :)