Let’s start by breaking down the difference between antiperspirant and deodorant. “Antiperspirants are over-the-counter deodorants that contain ingredients that interact with the sweat glands to help stop perspiration,” explains cosmetic chemist Ron Robinson of Beautystat.com. “Deodorants are products that work to mask underarm odour. They often contain a fragrance or perfume, along with an active ingredient called triclosan that is commonly used and works to prevent bacteria from growing, which in turn helps prevent odour.”
He notes that deodorants do not prevent wetness, but antiperspirants do. The various application vehicles often come down to a texture preference, says Robinson. To find out which application type is best for you — and our picks for keeping your pits nice and fresh this summer — read on.