All clothing on your body, whether carbon or not ,helps to hide your body odor. I dress in many thin layers when possible so that there are several layers for the odor to have to go through. The point to be made is that the carbon can't be reactivated in the dryer, the clothing has very little carbon sprinkles in it, and the dogs found a person in a tight wooden box with only a small airhole in it. Not to mention they throw a huge price tag on it because it has a light sprinkling of carbon in it. There are carbon sprays like carbon blast that can be sprayed on your clothes if you think carbon is the answer for a fraction of the cost of these clothes. At least a spray like carbon blast is active once applied.