I waited 3 weeks to post a review, because a few people have written reviews after 1 or 2 uses. These reviews, are for lack of a better term, useless.
Everyone is different, and a person with closed pores that retains more water, will take a few days, or even a week to start seeing the results. It took a week for me to see results in the under arm areas and neck areas.
I ordered a neoprene belt, from McDavid, and used it over my waist with a layer of "Sweet Sweat(tm)" around my waist. After 20 minutes of running or cardio of any kind, I take the belt off and my waist line is just beaded with tons of sweat.
I also tried Sweet Sweat with a "Kutting Weight" Sauna Shirt that I ordered last week, and it works miracles. I put the sweet sweat all over my upper body, put on a t-shirt, then the sauna shirt over that. Work out for 45 minutes, doing WHATEVER and the suit heats up your core, while the sweet sweat maximized the amout of sweat output.
I definately recommend this product for people who have fat under their arms, or around their waist and they want to drain/trim those areas.