What effect does chlorine have in a child's hair?

Chlorine can have a drying effect on a child's hair, stripping it of natural oils and leading to brittleness and potential damage. It can also cause discoloration, particularly in lighter hair, resulting in a greenish tint due to reactions with copper and other metals in the water. To mitigate these effects, it's advisable to rinse hair before swimming and use a swim cap or apply a leave-in conditioner afterward.