Rinse the stain with cold water as soon as possible
Blot gently with a clean cloth or paper towel
Apply a small amount of liquid laundry detergent directly to the stain
Rub the fabric gently against itself or with a soft brush
Let the detergent sit for 10 to 15 minutes
Rinse again with cold water
Repeat if needed until the stain fades
Soak the jeans in cold water with laundry detergent for 30 minutes to 1 hour
Use hydrogen peroxide only on light-colored jeans and test first on a hidden area
Wash the jeans in cold water after the stain is mostly removed
Check that the stain is gone before drying
Air-dry the jeans instead of using a dryer
Repeat the treatment if any stain remains
Avoid hot water, which can set the stain