2.
According to the color of plastic, the specific removal method is as follows.
The primary color of water can be washed off directly with detergent or cleaning agent dipped in water.
Oily color can be removed with alcohol, wind oil essence and paint thinner.
Paint stripper can be used for curing stubborn paint, but it should be paid attention to in proper amount.
3. soak in rice washing water.
4. Try chemicals called color bleaching, such as white cat color bleaching (containing hydrogen peroxide);
5. Add washing powder and detergent 1: 1 to warm water with more anionic surfactants.
Soak the dyed shoelaces in warm water for more than half an hour, and then rub them by hand. If you still can't wash it clean, put all the shoelaces in water above 50 degrees Celsius, add a small amount of washing powder to scrub, and use the fading of shoelaces to reduce the dyed color.