Our clothing cleaner contains sodium gluconate, sodium hydroxide, and disodium EDTA. It can effectively remove stubborn sweat stains, blood stains, and other protein stains on cuffs and collars without damaging the fabric. Its usage is very simple: before washing, spray this product onto the stains on dry clothes, let the clothing sit for 15 seconds to allow the stains to fully dissolve, add a small amount of water, rub repeatedly until the stains gradually disappear, and finally rinse off the residue with clean water. It can also clean and remove stains.