AP BIOLOGY

Detailed explanation-1: -Those stains aren’t just caused by sweat. It’s actually a deeper combination of your bodily fluids and the chemicals in your antiperspirant. “Some antiperspirants contain aluminum-based compounds that react with the urea found in sweat to form a yellow stain, ” P&G principal scientist Mary Johnson tells SELF.

Detailed explanation-2: -Pit stains happen when the aluminum in your antiperspirant or deodorant mixes with your sweat and gets absorbed into your clothes. Over time, more residue builds up on your clothes and yellows the stain.

Detailed explanation-3: -The white residue left behind on your favourite black t-shirt is mainly caused by the active anti-perspirant ingredients in your deodorant – the aluminium salts. White marks can appear form using different types of anti-perspirant.

Detailed explanation-4: -Deodorant stains, which are chalky marks found on the underarms of shirts, are caused by a pesky mix of alkali, aluminum, and proteins in your deodorant. In general, black clothing is more susceptible to visible staining due to the contrast between the white stain and the dark shirt.