Hi,

No that is just where the very top layer of the new scales got lifted off/ stuck to the old skin while shedding. If you check after the next shed they should be gone ( or at least on different scales ).

Raising the humidity may help but it's a fairly common thing and no cause for concern. On the scaleless hets there is no scales whatever on the patch - just flat skin or what they call "micro-scales" I think - someone correct me if I am wrong about this as I have never managed to actually get my hands on one to be certain.