Dandruff Say: dan-druf Dandruff is flakes of dead skin on your head that come loose all the time, but especially when you scratch your head, brush your hair, or pull a shirt over your head. Sometimes, during puberty, your oil glands go a little wild and you develop a lot more dandruff than normal. But with the right shampoo or medicine, you can fight that flaky feeling. Back to Articles Related Articles Note: All information is for educational purposes only. For specific medical advice, diagnoses, and treatment, consult your doctor. © 1995-2021 KidsHealth®. All rights reserved. Images provided by The Nemours Foundation, iStock, Getty Images, Veer, Shutterstock, and Clipart.com.