As soon as children start to talk, they ask a wide range of questions and make comments about differences. Try to give simple, direct responses when your child asks a question. And yes, his hair is long. Boys can have long hair, and girls can have short hair. She's speaking another language.
People speak in many different languages.
Remember that questions and comments are a way for children to gather information about aspects of their physical identity. Children ask these questions to sort out ideas about who they are and how they are the same as or different from others. Always respond to your child's questions and comments, even if you aren't sure what to say. That woman may be from a country called India, where some of the women wear a dot like that on their foreheads. I will try to find out what it means so we can talk about it later.