I would try to wash with a clarifying shampoo. Maybe the Kinky Curly Come Clean since it is sulfate free and wont strip your hair, or something like it. A good drug store brand would be cream of nature's moisturizing shampoo. Then I would do a good moisturizing deep conditioner. Maybe you will have to do this 2 or 3 times over the next week or so to rebalance your hair, but that should help. In the meantime, try to keep it moisturized and protected (braids/twists).
Over 10 years natural and still growing...