what is the difference between an anti-perspirant and a deodarant?

An anti perspirant stops the secretion of sweat at the area where it has been applied. Since there is no sweat, there will be no undesirable body odor, too. Body odor emanates from the bacteria which life support is the body sweat. A deodorant does not necessarily stops sweat. But the deodorant kills the bacteria which shall cause body odor. You may notice that some people sweat profusely but, they do not smell bad. This is the scenario that a deodorant seeks to achieve.

Deodorant is just that.... It is supposed to de-odorise. An anti-perspirant hinders your body from creating perspiration. An ordinary deodorant does nothing to stop perspiration.

Anti-perpirant is meant to stop you sweating as well as making you smell good. Normal deoderant just makes you smell good.

As far as I know, an anti-perspirant stops you from perspiring. A deodorant just masks the smell. Apparantly it's more hygienic to use the deodorant. An anti-perspirant shouldn't be used too often. At least, that's what I was told many moons ago.

One stops the smell and adds a little perfume. The other just covers up the smell with perfume. One the perfume wears off (quickly) then you still smell. I think anti-perspirant is getting more for your money.