Children have a more sensitive scalp than adults. Babies' scalps are extremely sensitive but as children grow, their scalp sensitivity lessens a little each year. In some children the sensitivity doesn’t reduce due to a Sensory Processing Disorder (SPD). They find it difficult to process sensory information such as sound, movement and touch causing them heightened reactivity. The painful touch of the brush on their head is too much to bear. For other children (and some adults), it’s a case of a sensitive scalp that you can work on desensitising.