Dry scalp when air drying

The title says it all really.

Whenever I try to let my hair air-dry, my scalp goes crazy dry. Has anyone experienced that before, and what can I do about it?

updated by @gingerlocks: 01/13/15 09:59:50PM

Have you been using particularly hot water lately? I know from experience that that can help to dry out skin. Maybe use warm but not hot water in the shower. Also, if you wash your dreads in the sink from time to time, it makes it a lot easier to do a cold water rinse, which can really help.

Otherwise all I can think to suggest would be some kind of oils, but there's plenty of others here who are more knowledgeable than myself on that particular subject.

I wash with cold water. And i use the soap bars from the dreadlock shampoo site,

use a cooler setting on the blow dryer trhen

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My new book Ban The Taboo Vol 1

I'll give that a go. Thanks everyone.