Those are rexes, not hairless. Hairless babies get fur(it is much thinner and breaks easily) and by the time they are 3 weeks old or so, it will start falling out. Especially with how their whiskers are, more kinky than curly. Hairless' whiskers look very curly, like you stuck your finger in a light socket, and they curl towards the nose. Those are rex whiskers and if you look, they have "old man" eyebrows. They're cute, but they're rex.