First of all, children are ugly because their skin is not very good. Then parents can make more efforts in this respect. For example, there are many foods that are good for children's skin, and parents can buy more for their children. On the other hand, parents should give their children more fruits, because fruits are rich in water and some vitamins, which can play a greater role in children's skin.
On the other hand, if you still can't improve this aspect, you can consider improving your child's temperament, because sometimes a person's temperament is good, even if his appearance looks ordinary, he will feel good.