What is the reason for thinning and yellowing hair in children?

Thinning and yellowing hair in children may be associated with a number of factors.
Congenital inheritance, and their parents may also have a similar condition
scalp diseases, such as ringworm, which can cause hair breakage and hair loss
Poor nutrition, such as picky eating that affects the intake and utilization of proteins, vitamins and trace elements.
Poor daily hygiene habits and improper hair and scalp care.
Suffering from chronic diseases, the organism is in a state of chronic depletion for a long time, etc.