Maybe just sweat: Sweat is mostly composed of sodium chloride and water. It is the evaporation of the water that cool down the body. As that occurs, it leaves behind the salt, which can appear as deposits of white crystals on the skin and clothing.
Answered 1/5/2019
5.6k views
A doctor has provided 1 answer
8 doctors weighed in across 3 answers
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question