Wendy Nash, a child psychiatrist at the Child Mind Institute in New York, said that she and her colleagues frequently work with prepubescent girls who are bothered by their body hair and have been mocked because of it, either at school or by their siblings. She also has appointments with parents who are conflicted about taking their young daughters to have their hair lasered or waxed.

“It’s a topic that’s coming up with younger and younger girls, partly because of the rise of social media and partly because puberty is happening earlier,” she said.