Rinse the stained area with cold water as soon as possible
Mix equal parts white vinegar and water
Soak the stain for 15 to 30 minutes
Gently rub the fabric together or use a soft brush
Apply liquid laundry detergent directly to the stain
Let it sit for 10 to 15 minutes
Wash the shirt in the hottest water safe for the fabric
Add oxygen bleach for white or color-safe fabrics if needed
Avoid using chlorine bleach on protein-based stains
Air-dry the shirt and check the stain before using a dryer
Repeat the treatment if the stain remains
Use baking soda and water paste for stubborn yellow stains
Pre-treat with an enzyme stain remover for heavy sweat buildup
Have dry-clean-only shirts professionally cleaned
Wash dress shirts promptly after wearing to prevent buildup