I pretty much figured I was stuck with some kind of harsher shampoo or another. All of the information posted has been helpful, though.
I am going to see if I can go a couple of weeks between using the scalp oil and shampooing and hopefully that will limit the dryness.
As far as diet, that is definitely something to consider and that I can work on. I will also consider discontinuing the use of the mousse and spray gel. I've been getting rid of a lot of product (including the hairspray I used to use every day!
I will discuss these concerns with my dermatologist during the follow-up appointment.
Thank you all again!