Thank you for your query,
Some children may have excessive hair on face in comparison to the other and this depends on their genetic and familial constitution and any exposure to prolonged steroids
Child needs the examination to look the extent, review of his history of drugs and family history to know the causes of excessive hair.
So consult your Pediatrician
for the examination and to rule out any abnormal causes of excessive hair growth
apart from the normal variants.
Hope I have answered your query.