text: what does it mean if your sweat is brown? i have never before had an issue with my clothes staining or anything like that, but i have noticed in the past few days my underarms are leaving brown on my bras, deoderant stick, shirts, etc.  this is pretty embarrassing for me, as you can imagine.  does anyone know what could cause this? i'm not saying your probably dirty but try using a loafa with your soap or body wash in the shower.  shower in the mornings before you start your day to know you are clean and apply deoderant on freshly cleaned skin.  i know that your sweat can smell stronger when you've eaten spicey foods and a lot of greasy foods, so maybe the tent is from the foods too.  or maybe you aren't drinking enough water either.  when you urinate, is your urine dark or clear?  dark soda could be the cause.  try more water and cut out soda and eat fruits and veggies too.