The main difference is really about how much hair gets removed and the coverage. With a regular bikini line treatment, they only remove hair that would be visible in a standard bikini, so basically the sides and the top. It's pretty straightforward and less intensive than going full Brazilian. A Brazilian removes basically everything except maybe a small triangle or landing strip if you want to keep something. It's definitely more extensive and takes longer during the appointment. Some places in Chicago are really good at doing these treatments, so definitely shop around and read reviews before committing.