My best friend and I decided to try these on a whim. Be prepared though, you need at least 45 minutes to do all three steps and I wouldn't recommend talking or eating while doing so. It didn't seem to catch much from my nose but it still was very effective (I might have not had that much in there). The only down side is step 1 and 3 have a strong strawberry smell that can be a little too much. One preps, two dries and extracts, and three is a great cooling, slimey aftercare. It's a fun thing to do if you have the time and is effective.