I'm new here... I recently bought a Victorinox classic chrono watch with a black leather strap. After the first day of use I noticed the inner part of the strap was "stained" with my perspiration and thought the stain would go away after the strap would dry. That didn't happen (see attached photos).
Does this ever happened to anyone? Any advice you could provide regarding how to remove the stain or taking care of the strap?