Dudley's Hair & Scalp Conditioner plus Vitamins AD&E is an extra light oil designed to lubricate the scalp and soften the hair by supplementing the scalp's natural oils. Vitamin A is necessary for healthy oil production of the scalp. Vitamin D works as a nutrient, and Vitamin E protects the hair from oxygen-stealing free radicals like cigarette smoke, air pollution and incomplete breakdown of proteins and fat in the body.