In most cases, pubic hair in infants is a normal and temporary condition that resolves on its own. If you have concerns about your infant's lanugo or overall health, it's always best to consult with a pediatrician for personalized advice.
In the first few months of life (typically up to 6 months in males, 12–24 months in females), the infant’s hypothalamic-pituitary-gonadal axis is briefly active. pubic hair in infants