My youngest daughter has a bedroom shelf full of cosmetic products. I pointed to one and asked what it was. "It's fake tan", came the answer. "What's this one?", I asked pointing to another. "It's fake tan", she said again. I indicated another one and repeated the question. Same reply. She then explained that they were different formulations with different application methodologies and had different levels of permanence, and that she had two more which I hadn't asked about.
I'm really proud of her!