How do advertisements influence underage drinking?

Advertisements, they advertise potential customers to do what they want by appyling different approaches, no matter the object they advertise, they will apply the bandwagon, association, promotions, claims, and repitition technique. Each has a different appeal to their potential future customers. Such as the bandwagon, for example, let's say an underage individual sees the singer they admire the most drinking alcohol in an advertisement (or commercial), they desire to be like said singer and start drinking themselves.