How to remove soy sauce, tea and coffee stains? The newly dyed soy sauce and oil stains can be washed with cold water and then washed with detergent. Old stains can be washed by adding appropriate amount of ammonia water into detergent solution or 2% borax solution (except for silk and wool). Or use white radish juice, sugar water, alcohol to wash and rub.
Tea stains:
Fresh tea stains can be rubbed with hot water at 70-80 ℃. Old stains can be washed with concentrated brine, or with 1:10 ammonia glycerin mixture.
Coffee stains:
It can be wiped with the mixture of glycerin and egg yolk, dried slightly, and then rinsed with water. It can also be removed with 3% hydrogen peroxide, concentrated brine and glycerin solution.