It will be eaisier to help you if you can include more context with your question.
How are you? I want to ask 1 a question about Ethical. I really don't understand the meaning of ethical, while people talk about the sales channel of skincare products. I think its meaning is similar to "medical". Is that right?
No, it isn't right.
Have you checked a dictionary? Here's what one dictionary says:
ethical - Definition from the Merriam-Webster Online Dictionary