Multiple choice general knowledge science & technology

The sweat-blocking ingredient in antiperspirant is often:

  1. An aluminum compound.

  2. A calcium compound.

  3. A magnesium compound

  4. A tin or stannous compound.
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A Correct answer
Explanation

Aluminum compounds (typically aluminum chlorohydrate or aluminum zirconium) are the active sweat-blocking ingredients in antiperspirants. They work by forming temporary plugs in sweat ducts. Calcium, magnesium, and tin compounds are not used for this purpose in antiperspirants.

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