Certainly scabies can live on your face and scalp, its just not the typical areas they tend to live and only happens in more advanced scabies cases. Another reason people think this is because on some treatments it says do not apply from the neck upwards but this is just because those treatments contain pesticides and can be dangerous. You need to be using sulfur based treatments if you have scabies within the face or scalp area, these treatments are more effective anways.

You can get scabies sulfur creams and soaps here

That is also a good treatment protocol to follow if your not going to see a dermatologist!

Hope this helps!