Soap stains on clothes generally do not need to be cleaned with other additives, soap stains themselves will not stain, rinse with water.
Common stain removal methods:
1, if you accidentally stick on the chewing gum, just use a piece of ice on the chewing gum for a while, you can easily remove.
2, if accidentally spilled wine on the clothes, immediately spray a cigarette, the water halo will not spread, and then wipe with hot water or alcohol, you can remove the wine traces.
3, clothes stained with juice, wipe with hot water and detergent, you can immediately remove, if left for too long, juice traces will turn yellow, then you must wash with bleach.
4, accidentally stained lipstick on the shirt, you can wipe with alcohol, gasoline, and then rub with a small amount of alkaline detergent powder after drying. Wipe with peeled bread and steamed bread, you can also remove lipstick stains.