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holding a gallon of homemade laundry soap
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4.75 from 4 votes

Non-Toxic Liquid Laundry Soap

In this post & video, I’ll show you how to make your own liquid laundry soap with non-toxic ingredients.  I’ve been using this laundry soap for our family of 6 for years! 
Prep Time30 minutes
Total Time30 minutes
Course: DIY
Cuisine: American
Keyword: how to make your own liquid laundry soap, laundry
Servings: 5 gallons
Author: Stephanie Dieckman
Cost: $10

Equipment

  • grater
  • 1 5-gallon bucket

Ingredients

  • 6 ounces Castile soap bar
  • 1 cup borax
  • 1 cup Super Washing Soda
  • Essential oils or a handful of fresh herbs optional

Instructions

  • Heat 4 cups of water or fragrant herbal infusion on the stove on low-medium
  • Grate 6 ounces of Castile bar soap
  • Add the grated soap to the hot water/infusion and stir until its melted 
  • Fill a 5-gallon bucket halfway with hot water
  • Add 1 cup of Borax and 1 cup of washing soda to the 5 gallon bucket and stir until dissolved into the hot water
  • Pour the melted soap mixture into the 5 gallon bucket and continue stirring.
  • Top the 5 gallon bucket off with hot water, put a lid on it, and let it rest for 24 hours.
  • After 24 hours, it is ready to use.  It will look cloudy and be slightly gelled.  It will not gel and be soupy/clumpy like laundry soap made with fels naptha and other bar soaps.  That's ok!
  • Use 1/2 cup per load, shake before use

Notes

  • If you'll be using an herbal infusion for step 1, make it a day in advance by adding your fresh herbs to a quart jar, topping it off with hot water, sealing, and letting it steep for several hours or a day. Strain the infusion through a cheesecltoh to remove herbs and sediment prior to heating for step 1.