Malnutrition and poor hygiene may also affect the child's scalp. If a child is not bathed regularly, an excess amount of oil on the scalp may plug the pores of the skin, leading to an inability of the hair follicle to function normally. The result is severe dermatitis or cradle cap, where the layer of oil that is on the scalp becomes brownish-yellow and then flakes off, looking similar to adult dandruff. The scalp may appear red in areas. A good way to treat cradle cap is with T-gel Shampoo by Neutrogena. It is a coal tar extract, and a tiny amount can be used every other day to remove the scales and oil until the scalp looks cleaner. This will also improve the scalp's ability to grow hair.