First off, Welcome to BP.net!!

Secondly...individual scales coming off as you describe may be cause for concern. It's certainly not normal or common. Is there any discoloration involved besides a "dryness?" And can you describe your setup? What kind of substrate are you using? How are you heating it? How are you measuring the temps? And any other details you think would help us to picture your setup. (Pictures are great, too! LOL) And one last question...have you ever rubbed any sort of oil-based product on your snake for any reason?