The Original DIY Homemade Laundry Soap

Homemade Laundry Soap

This is it guys, this is the recipe I have used to make all of my family’s laundry soap for the past 4+ years. Its easy, fast, cheap… Key components to DIY for me! I can’t even calculate how much money I have saved using this recipe, and my son’s eczema has all but disappeared thanks to me making the switch! I’m not adding a lot of fluff to this post because for me laundry soap is and industrial family necessity, and if you are sitting at your computer or on your phone googling a DIY laundry soap you want it for one of three reasons, to save money, to use a more natural product for your family, or because gosh darn it you hate the grocery store and just want to do it yourself!

You will need three ingredients to make this.. that’s it! Borax, Arm and Hammer Washing Soda, and Fels Naptha bar soap (Zoate, Ivory and Castille Soap are other options!). Here is approximately what they cost.

  • 1 55 ounce box of Arm & Hammer Super Washing Soda = $3.97
  • 1 55 ounce box of 20 Mule Team Borax = $3.97
  • 1  Bar Fels Naptha Bar Soap = $2.00

Liquid Recipe: My favorite 😉

  • 1 Cup Super Washing Soda
  • 1 Cup Borax
  • 1 Bar  Fels Naptha Bar Soap
  • Spring or filtered water


Boil about 4 cups of water in a large pot. Turn down and add grated Fels Naptha bar soap stirring while it melts. Add Borax and Super Washing Soda. Make sure it is dissolved! This is key to the gelling process :).
*tip.. use a food processor to grate your soap.. it’s done in seconds!

When dissolved add about 4 more cups of  cold water. I like to use half gallon mason jars to store my soap, mostly because I love how they look stored on my laundry shelf :p. A lot of people store theirs in old laundry soap containers  in 5 gallon buckets, really whatever container you have lying around will work. Old pickle jars are perfect actually!

This recipe will make about 3.5 gallons of soap when finished. I like to line up my containers on my kitchen table, and fill just over half way with the liquid soap mixture. I top them off with more cold water and allow to cool. If you are using plastic containers, make sure you allow your soap mixture to cool for a bit before pouring in. I have carelessly melted the container and caused a huge mess before! The soap will gel gradually as it cools.

I use about 1/4 cup per average sized load of laundry. To pre-treat stains I like to dab a little right on the spot and let it sit for a bit. The final cost for one batch of this soap is about $3.15 !!! That is 3.5 gallons of laundry soap for just over $3!

Dry Recipe:

  • 1 Cup Super Washing Soda
  • 1 Cup Borax
  • 1 Bar  Fels Naptha Bar Soap


Using a food processor with the shred attachment grate the Fells Naptha Bar Soap. Add the Borax and Super Washing Soda. Pulse a couple more times an scoop into a sealed container.. (well that was easy!) Again I prefer mason jars because they are just so darn cute but you can store in any kind of sealed container or jar. I use about 1 Tbsp per load of laundry! THATS IT!! Because it is so finely grated using the food processor it dissolves easily, even in cold water.

Many people add essential oils right to the batch of laundry soap as they are making it. I find that I prefer to add a drop as I’m. Some of my favorites include, lemon,  protective blend,  Melaleuca and Wild Orange (send me a message to learn about my favorite essential oils). Each have their specific uses and I like the freedom to switch it up!

Leave a Reply

Your email address will not be published. Required fields are marked *