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Homemade Laundry Soap

Homemade Liquid Laundry Soap from Frugally Sustainable

-1 bar grated castile soap, or my own homemade laundry bar soap
-1 1/2 cup baking soda
-1 cup super washing soda
-1 cup borax
-Optional: lavender, sweet orange, or your favorite essential oils
*Most of these items should be found on the laundry aisle in your grocery store.

On medium-high heat, in a large pot, simmer 1 quart of pure water along with the grated castile soap, stirring continuously, until melted. Do not allow to boil. Remove pot from heat and add remaining ingredients stirring vigorously until completely dissolved. Pour contents of pot into a 5 gallon bucket and begin to slowly add 2 gallons of pure water while continuing to stir. Let laundry soap sit for 24 hours prior to use (this allows it to thicken).

Use 1/4-1/2 cup of laundry soap per load.


-After the 24 hour thickening period, you may use a funnel to transfer soap into alternative storage bottles, i.e. old milk jugs, old laundry detergent bottles. I keep mine in the bucket, it’s just easier for me.

-I prefer liquid to powder for one main reason. With the liquid soap everything is already dissolved so I can run the washing cycle with cold water. Whereas with the powder, I had to use warm or hot water to be sure that the powder soap dissolved and did it’s job.

-This is a low suds recipe. Therefore, it works just as well as your high-efficiency laundry detergents found in the store.

-You may find, after the soap has cooled, that it is to thick for your liking. Go ahead and add water slowly until your desired consistency is reached. Not to much though; it’s supposed to be gel-like.

-For the brightest laundry, pour white vinegar in fabric softener compartment with each load (I promise your clothes will not smell like vinegar and you’ll love the results).

Thank you Frugally Sustainable for the great recipe, and helpful notes!
** Essential oils and extracts, carrier oils and waxes, containers for your DIY products and much more can be found at Mountain Rose Herbs.

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