There is nothing worse than finding out your chosen deodorant or antiperspirant has left permanent pit stains on your favorite white dress or shirt. "The yellowish discoloration of white clothing can be caused by the aluminum in deodorants of antiperspirants when mixed with body sweat,” says Dr. Holmes. She recommends using an enzyme-based detergent to launder the affected items and remove the discoloration. She also says that opting for a clear gel deodorant or antiperspirant will also help eliminate staining.