My scalp is always dry and flaky, as well as my face, especially around my eyebrows, forehead, and hairline. I have tried everything in the book-steroid foams, creams, lotions, shampoos, salicylic acid, sulfur, you name it. I cannot even put on my makeup without first slathering cream and aquaphor ointment on my face. I get microdermabrasion once every two weeks, and have even had UV light therapy. My aesthetician swears that I am using a retinoid or benzoyl peroxide derivative to make my skin so flaky, but I certainly am not. I am a pharmacist, and feel that I am somewhat educated on most skin problems, but I cannot figure this one out. Could it be internal? Some sort of vitamin deficiency? The rest of my skin (other than face and scalp) is pretty dry, too. I have had my thyroid checked, but never had vitamin levels checked. Any advice? I am so tired of being embarassed.