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> This is not a claim that Crystal makes. They make several claims. It's also a claim I've made based on personal experience with both "mineral salt crystals"

> This is not a claim that Crystal makes. They make several claims. It's also a claim I've made based on personal experience with both "mineral salt crystals" (alum - http://en.wikipedia.org/wiki/Alum http://en.wikipedia.org/wiki/Alum) and regular deodorant, and knowing the ingredients in both and how those ingredients affect bacteria. > even if Crystal managed to kill all the bacteria under your arms, it would be back the next day. One killed off all odor causing bacteria after a few weeks (I no longer have to use it, maybe once a week). The other just kept it masked even after YEARS of use. I'll let you guess which one that was. > No one is sitting around twisting their mustache and creating deodorants and antiperspirants that specifically protect underarm bacteria. No, they just don't put the same amount of alum in their products to make it effective. Their game is to mask the odor, and not to prevent it from happening again. LTV of customer is the #1 metric in business. > a big iodine swab would do the job faster and even cheaper. Never tried it. But if it works for you, use it.

dpark 14y ago
> They make several claims. But notably not that one. And their claims specifically contradict yours. > It's also a claim I've made based on personal experience with both "mineral salt crystals" (alum - http://en.wikipedia.org/wiki/Alum http://en.wikipedia.org/wiki/Alum) and regular deodorant, and knowing the ingredients in both and how those ingredients affect bacteria. You can make whatever claims you want. That doesn't make them valid. Lots of people have "personal experiences" with homeopathic medicine and are convinced of its efficacy. That doesn't mean they're correct. I also question how much you actually know about how the ingredients in various deodorants affect bacteria. > One killed off all odor causing bacteria after a few weeks (I no longer have to use it, maybe once a week). No, it didn't. Are you really under the belief that those "odor causing bacteria" existed only on your armpits? That they don't exist on the skin around your armpits, or you know, all over your body? That they couldn't and wouldn't simply spread back to your armpits if you managed to kill them off there? I also hate to break the news to you, but there's a pretty good chance that you're smelly and just don't know it, because over the course of "a few weeks", you trained yourself not to notice it. > No, they just don't put the same amount of alum in their products to make it effective. Many of them don't use alum at all, because other ingredients are known to work better, especially for people who also want antiperspirant effects. > Their game is to mask the odor Masking the odor would mean covering up. Alum, aluminium chlorohydrate, and aluminum zirconium tetrachlorohydrex gly don't have any significant smell of their own. Indeed, you can buy unscented deodorants from the major manufacturers, and they are exactly as effective as the scented ones.
- powertower 14y ago
  You seem to be replacing my own experience, and that of the people that alum rocks have worked for, with your own lack of it.? > with homeopathic medicine and are convinced of its efficacy. That doesn't mean they're correct. I don't see how that's even remotely a valid comparison. There is nothing homeopathic about alum crystals. > That they couldn't and wouldn't simply spread back to your armpits if you managed to kill them off there? Then why didn't they spread and colonize the next day, as you have claimed they would? Ohh, you've already explained that away. My skin is not my armpits. The other areas don't have the same temperature, humidity, and sweat. Those areas don't have and breed bacteria like armpits do. And it takes time for the bacteria to spread, multiply, and get below the surface. Once you've eliminated an area, it's going to be a while, regardless of the small amounts of bacteria on other areas. > Indeed, you can buy unscented deodorants from the major manufacturers, and they are exactly as effective as the scented ones. I have no idea what you're trying to convince me of. That I'm a crazy homeopathic guy with no sense of smell, covered in massive colonies of armpit-smelling highly-mobile bacteria that spreads like a fire? You might as well claim I'm a paid shill for the product.
  - Daniel_Newby 14y ago
    > Then why didn't they spread and colonize the next day, as you have claimed they would? They do. Armpits are smelly because the sweat glands there excrete bacterial nutrients designed to feed smelly bacteria. Aluminum compounds plug the outlet of the sweat glands, choking off the supply of nutrients. The plugs last for days. > Once you've eliminated an area, it's going to be a while, regardless of the small amounts of bacteria on other areas. The other areas have 1 million bacteria per square centimeter that are easily spread, and a population doubling time of around 20 minutes in a favorable area like a damp armpit. Run the numbers on geometric growth at that rate. Even if you reduce bacterial density by 99.99%, they will be back in a few hours.
    - powertower 14y ago
      Mine haven't been back for some time; I better let them know they're late!
jrockway 14y ago
But I heard it will interfere with my time cube and magnetic bodysuit.

dpark 14y ago

> They make several claims. But notably not that one. And their claims specifically contradict yours. > It's also a claim I've made based on personal experience with both "mineral salt crystals" (alum - http://en.wikipedia.org/wiki/Alum http://en.wikipedia.org/wiki/Alum) and regular deodorant, and knowing the ingredients in both and how those ingredients affect bacteria. You can make whatever claims you want. That doesn't make them valid. Lots of people have "personal experiences" with homeopathic medicine and are convinced of its efficacy. That doesn't mean they're correct. I also question how much you actually know about how the ingredients in various deodorants affect bacteria. > One killed off all odor causing bacteria after a few weeks (I no longer have to use it, maybe once a week). No, it didn't. Are you really under the belief that those "odor causing bacteria" existed only on your armpits? That they don't exist on the skin around your armpits, or you know, all over your body? That they couldn't and wouldn't simply spread back to your armpits if you managed to kill them off there? I also hate to break the news to you, but there's a pretty good chance that you're smelly and just don't know it, because over the course of "a few weeks", you trained yourself not to notice it. > No, they just don't put the same amount of alum in their products to make it effective. Many of them don't use alum at all, because other ingredients are known to work better, especially for people who also want antiperspirant effects. > Their game is to mask the odor Masking the odor would mean covering up. Alum, aluminium chlorohydrate, and aluminum zirconium tetrachlorohydrex gly don't have any significant smell of their own. Indeed, you can buy unscented deodorants from the major manufacturers, and they are exactly as effective as the scented ones.

powertower 14y ago
You seem to be replacing my own experience, and that of the people that alum rocks have worked for, with your own lack of it.? > with homeopathic medicine and are convinced of its efficacy. That doesn't mean they're correct. I don't see how that's even remotely a valid comparison. There is nothing homeopathic about alum crystals. > That they couldn't and wouldn't simply spread back to your armpits if you managed to kill them off there? Then why didn't they spread and colonize the next day, as you have claimed they would? Ohh, you've already explained that away. My skin is not my armpits. The other areas don't have the same temperature, humidity, and sweat. Those areas don't have and breed bacteria like armpits do. And it takes time for the bacteria to spread, multiply, and get below the surface. Once you've eliminated an area, it's going to be a while, regardless of the small amounts of bacteria on other areas. > Indeed, you can buy unscented deodorants from the major manufacturers, and they are exactly as effective as the scented ones. I have no idea what you're trying to convince me of. That I'm a crazy homeopathic guy with no sense of smell, covered in massive colonies of armpit-smelling highly-mobile bacteria that spreads like a fire? You might as well claim I'm a paid shill for the product.
- Daniel_Newby 14y ago
  > Then why didn't they spread and colonize the next day, as you have claimed they would? They do. Armpits are smelly because the sweat glands there excrete bacterial nutrients designed to feed smelly bacteria. Aluminum compounds plug the outlet of the sweat glands, choking off the supply of nutrients. The plugs last for days. > Once you've eliminated an area, it's going to be a while, regardless of the small amounts of bacteria on other areas. The other areas have 1 million bacteria per square centimeter that are easily spread, and a population doubling time of around 20 minutes in a favorable area like a damp armpit. Run the numbers on geometric growth at that rate. Even if you reduce bacterial density by 99.99%, they will be back in a few hours.
  - powertower 14y ago
    Mine haven't been back for some time; I better let them know they're late!

jrockway 14y ago

But I heard it will interfere with my time cube and magnetic bodysuit.