of Kootenai County, Idaho Issue #17 April 22nd www.tidbitscda.com
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TIDBITS® CONSIDERS DEODORANTS
by Janet Spencer For most of our time on earth, humans walked around stinking. Deodorant is a relatively new invention, and Tidbits tells the story. THE ARMPIT • To understand antiperspirant, you must first understand sweat. Sweat does not gush out of the pores. It hangs in the opening like a drop of water in a faucet. What finally pulls the sweat out is an electrical charge. A bead of sweat has a negative electrical charge. The surface of the skin has a positive electrical charge. The positively charged skin yanks the negatively charged sweat out of the pores. Enter antiperspirant. Aluminum chloride is the active ingredient, and it has a negative charge. The negatively charged aluminum shoves the sweat back into the body, just like two negative ends of a magnet move each other around. The sweat is re-absorbed by the body and the skin stays dry. • Deodorant is another story. There are bacteria living in a typical armpit, which is warm and moist. The ammonia waste products produced by the bacteria cause the odor. (Sweat is odorless.) Deodorants contain insecticides and bactericides that wipe out the entire arm pit colony— temporarily, at least. When the antimicrobial agents wear off, the bacteria move in again, journeying from the shirt or other parts of the body.
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