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The color of sweat.
Matt:
This is probably a really weird question, but when I work up a sweat at the gym, there's always some yellowish stain around the collar of my white T-shirt. Why does the sweat make those nasty yellow stains on light-colored clothing?
-- Anonymous in East County
Weird at our house is a relative term. Sweat itself is colorless. But components of sweat, particularly fatty acids, oxidize once they soak into your T-shirt. Oxidization involves lots of electron swapping, and the resulting pit rings reflect yellowish light. Your shirts are sort of like old apples that turn brown after you bite them.
Here's something you might be interested in.
The color of sweat.
The color of sweat.
Matt:
This is probably a really weird question, but when I work up a sweat at the gym, there's always some yellowish stain around the collar of my white T-shirt. Why does the sweat make those nasty yellow stains on light-colored clothing?
-- Anonymous in East County
Weird at our house is a relative term. Sweat itself is colorless. But components of sweat, particularly fatty acids, oxidize once they soak into your T-shirt. Oxidization involves lots of electron swapping, and the resulting pit rings reflect yellowish light. Your shirts are sort of like old apples that turn brown after you bite them.
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