After sport why does my sweat dry to set out a powdery residue on my obverse that can with the sole purpose be described as saline?

Please don't tell me about the evaporation process, i'm trying to figure out why this simply happens on my face and stings if it gets contained by my eyes. I've tried a good detox but no change. My salt level are low so this can't be normal.
Answers:    Sweat is composed of salt and water. When the dampen evaporates the salt is left behind. Stay hydrated and try to drink an electrolyte drink (like Gatorade) which will replace the brackish that you lose through sweating.


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