Through trial and error.
When the player learns that psychically manipulating people and taking advantage of them results in those people wanting to murder them, they stop. Don't make the "frozen" people be in love with the skinner; that's not the move. It's not a seduce and it's not a hypnotize. No, they KNOW that what they're doing isn't natural and the MC should tell her about how she can see that in their eyes.
In our game, the male skinner used this on a noble woman (our setting was drifted) to distract her. But she KNOWS what's going on, the way we play it. She knows she should have looked away and she knows she's being held there by how supernaturally hot he was, but she can't look away. How does that make her feel, after? She HATED him before. The MC talked at length about how she felt the need to shower. And her threat type jumped to 11, I'm sure.
As to it being psychic or hot-hot, it's pretty psychic. It can be hot-hot in a lot of situations, but the first time some one who is really pissed off at the skinner makes a move toward the skinner and the skinner starts to slowly drop his jacket and unbutton his shirt, it'll jump to supernatural. At least for us. I'm sure you can explain it other ways.