Sweating is unpleasant on its own, but sweat stains on your clothes can make it even worse.
While many people can't completely get rid of them, it's at least useful to know why they appear.
Here are some reasons for that.
Composition of sweat
Sweat is mainly composed of water, electrolytes (such as sodium and potassium), and waste products like urea.
However, sweat itself is generally odorless. The problem arises when bacteria on the skin break down the components of sweat, producing compounds that can cause unpleasant smells.
Sweat and fabrics
When sweat comes into contact with fabrics, particularly those made of natural fibers like cotton or linen, certain reactions occur that can lead to visible stains.
Water-soluble stains
When sweat evaporates, it leaves behind salt crystals and other minerals that can bind to fabric fibers, creating a residue.
As the fabric dries, these minerals can cause discoloration and leave noticeable white or yellowish stains.
Protein-based stains
Sweat also contains proteins, such as urea and amino acids, which can contribute to stubborn yellowish stains on clothes.
pH level
The pH level of sweat can also impact its interaction with fabrics.
When sweat reacts with these materials, it can cause color changes or discoloration.
Body chemistry
Individual variations in sweat composition, body temperature, and skin pH can influence the severity and intensity of sweat stains.
