It just plan works.. [SEP] This will prevent chafing from any reason you get chafing between damp areas of skin that rub against each other. Enough said. You can figure out all the ways that happens... It's not just with a wet bathing suit. It can be from hopping out of the shower & getting dressed real quick , heading off to work,  and you're on your feet all day. You didn't get dried off completely. You know what happens next. That's just one example. Use it everyday... But this price gets expensive using it everyday. Hence the four stars, 4 price along.