Underarm stains are a common problem that can be embarrassing and difficult to remove. They can be caused by a variety of factors, including sweat, deodorant, and antiperspirant. While there is no surefire way to avoid underarm stains completely, there are a few things you can do to reduce your risk.
One of the most important things you can do is to wear breathable fabrics, such as cotton or linen. These fabrics will allow your skin to breathe and help to reduce sweating. You should also avoid wearing tight-fitting clothing, as this can trap sweat and lead to stains.