This laundry soap recipe uses washing soda, citric acid and cold process soap to thoroughly
Ingredients
2 cups Washing Soda
½ cup Citric Acid
2-3 cups Cold Process Soap (finely shredded)
5-8 mL Lavender 40/42 Essential Oil (increase or decrease depending on preference)
Optional: 99% Isopropyl Alcohol
Small Cubes Mold & Package, Plastic
Instructions
Using a cheese grater, shred your cold process soap using the fine grate option. If you have lye heavy soap, this is a great time to use it! If not, non-lye heavy soap works great too.
In a large mixing bowl, add the washing soda and citric acid. Washing soda can cause skin irritation, so I recommend wearing gloves and long sleeves when working with it. It can also irritate the nose and throat, so you can wear a mask if you like. Add the grated soap and mix to combine. Add the lavender 40/42 essential oil and use your hands or spatula to fully mix in. Spritz the mixture with rubbing alcohol until it has a slightly damp texture. This step is optional, but it helps the mixture keep its shape in the mold, much like a bath bomb!
As the laundry soap sits, it will begin to harden. You can place the soap into a jar, but within a few days it will harden and be difficult to scoop. To prevent this, I recommend placing it into individual cavity molds. I used the Small Cubes Mold & Package. In our tests, the Bendy Basics Molds worked great as well!
NOTE: If using a jar to store the laundry soap, use within 2-3 days to make scooping easier. If you placed the mixture into a mold, allow the soap to dry and harden for several days. This way, you can remove the soap from the individual cavities and place several tabs into the washer. For a very large load, I used about 4-5 small cubes of the soap. Enjoy!
Recipe by Soap Queen at https://www.soapqueen.com/bath-and-body-tutorials/home-crafts/natural-laundry-soap-natural-dryer-sheet-recipe/