Is it okay to use children in advertisements?

Using children in advertisements is okay but only when the product is intended for kids. It makes sense that children would advertise toys or clothes. We can see how they're having fun playing with something and they show off the product designed for them way better then an adult would. It's also obvious that kids shouldn't advertise anything not related to them, for example fireworks or other products that they shouldn't use at all or at least without an adult supervision. If another child would see an ad in which a kid advertises something that may be dangerous it would think that it's actually safe. Many threatening situations may come out because of a child being unaware of the risk that comes with using a given product. That’s why the product defines whether a child should or shouldn’t be in an ad.