I am working on a green laundry detergent recipe to sell to consumers. I want to do my part in saving this planet. I understand that soap nuts with a few other natural ingredients works great for what I am trying to do but the liquid version of it has to be used within 3 to 4 days. Do you have any recipes or suggestions on what to use for preservatives to make it have a longer shelf life?
You can also use GSE (Grape Seed Extract). It's sold in most Health Food Stores. It's a 100% Natural cleaner & antibacterial made from Grapefruit Seeds. Using the name-brand of "Nutribiotic". It cost about $12 or so for a small bottle, but it should last you quire some time cause you only need a little!
* Lots of Soap makers use GSE to preserve their homemade soap. You'll only need a tiny bit. Like about half a teaspoon per gallon. With GSE you Laundry soap should last a month or so. At least I think so. You can also keep the soap fresh longer by keeping it cold. Do you have an extra fridge in the garage? If so, this may be the way to go or maybe leave it the soap outside in the winter.
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I made homemade liquid detergent using powdered fels naptha soap, washing soda, and borax. I would like to know how long is this homemade detergent good for without preservatives?