I used Neutrogena T-Gel on DS2 when he got flaky but he also had a scaly spot on his scalp. I suspect his problem was from either not washing his hair in the shower (yuk) or not scrubbing his scalp so we used the T-Gel a few times a week with a moisturizing shampoo in between. The shampoo brush was a big help as well. If it isn't bad, maybe try a shampoo brush with regular shampoo first. No returning scales or flakes since we worked on better shampoo hygiene with him.
Mom to Two Wild and Crazy Boys and One Sweet Baby Girl