To get detergent stains out of clothes, there are a few different things you can do.
You can use pre-treatment products to counteract the stain before washing it. If the detergent was oil-based, use a grease-cutting soap which will remove both the oil and the stain.
For lemon juice or vinegar stains, use salt water from the tap to dissolve the stains then wash with cold water.
You can also spray with a product that contains enzymes, which break down proteins and oils so they rinse away with soap and water.
Be sure to use products that are safe for the fabric you are using.
Coats of paint can be difficult to remove by hand, but it’s possible if you rub with a solvent first then steam-wash.
If your washing machine has a hand-wash cycle, place the items in cold water on gentle and wash the clothing by hand. This should be enough to remove any paint that has not penetrated the fabric.
So this is how to get detergent stains out of clothes.