Soy sauce stains are just as deep as the flavour it offers. Follow these steps to get rid of soy stains from your denims.
If the stain is dry:
Prepare a mixture of 1 spoon of coconut oil and 3 spoons of Surf Excel liquid detergent. Rub it on the stain and keep it for an hour. Launder as you normally would.
If the stain is wet:
Prepare a mixture of 1-part Glycerin, 1-part Vim dishwash liquid and 8 parts of water. Rub some of the mixture on the stain. Launder as you normally would. You can store this solution for a long duration. Remember to shake well before each use.
Go ahead, enjoy your sushi without the fear of stains.