Hello shootingguard,
Nizoral is an anti-dandruff shampoo that may improve scalp irritation. Depending on the severity of your dry skin, it may help your situation. Some users have stated that it helped eliminate their dry skin but also claimed it dried out the quality of their hair if used too frequently. Also, using a lotion like Eucerin could help improve dry skin in mild cases. I would consult a dermatologist prior to using any treatments and have him/her examine the underlying cause.