DIY Laundry Soap

Homemade laundry soap? You bet!

We've been using this formula since 2010 and we're crazy about it. It's affordable, safe, and so easy to make that my kids can do it.

Since I originally share this tutorial back in 2011 I've made some tweaks, so grab your cheese grater and a bar of your favorite natural soap and let's get to work.

DIY Laundry Soap Recipe : : Clean : :

DIY Laundry Soap Recipe : : Clean : :

In my business we make a lot of soap.

A lot.

One of our cornerstone body care products, we sell thousands of bars each year and ever batch we make results some trims or damaged bars. We began selling the scratch and dent soaps years ago and found that many of your customers were snatching them up for making homemade laundry soap.

We couldn't resist trying it ourselves, and set to work experimenting with our own recipe.

Why use natural soaps for homemade laundry soap? Because what goes into your soap goes onto your clothes. And therefore onto your skin.

While my soaps are made with organic oils, essential oils, minerals, and herbs, most of what is sold as bar "soap" today – as well as most laundry "soap" – is actually synthetic detergent and synthetic fragrance oils. By making your own laundry soap out of good quality bar soap you can avoid putting those chemicals into your laundry. And I think that's worth a bit of extra effort.

DIY Laundry Soap Recipe : : Clean : :

DIY Laundry Soap Recipe : : Clean : :

In addition to soap you need only four additional ingredients to create homemade laundry soap.

All can be found at your local grocery store:

  • baking soda
  • borax
  • oxygen bleach and
  • washing soda

Baking soda is a natural odor remover, and borax softens water. Oxygen bleach boosts the stain-removal power of he recipe and the washing soda is chemically similar to baking soda but is a much stronger base (high pH) and helps neutralize the natural moisturizers found in soap.

Two thoughts before we begin regarding soap selection:

  • Any of the soaps I make are laundry friendly. If you opt for another brand, select soaps that do not contain synthetic colorants or large bits of ground herbs. (The colorful bars shown above are colored mineral pigment colors that won't leach onto clothing.)
  • If you are mixing different soap varieties choose scents that harmonize with each other. (We used a lavender soap and a eucalyptus bar.)

DIY Laundry Soap Recipe : : Clean : :

DIY Laundry Soap Recipe

Materials and Equipment:

Soap, approximately 4 ounces (to make 2 C) (One large or two medium bars)
1/2 C Baking Soda
1 C Borax
2/3 C oxygen bleach
1 1/3 C Washing Soda
Essential Oils (optional)
Box grater or electric grater
Food processor (optional)
Non-plastic mixing bowl
Non-plastic mixing spoon
Jar, for storing laundry soap

DIY Laundry Soap Recipe : : Clean : :

DIY Laundry Soap Recipe : : Clean : :

DIY Laundry Soap Recipe : : Clean : :


Gather your materials and equipment. You may consider wearing your gloves and dust mask as we'll be working with powders and alkaline materials (washing soda).
Grate soap on the fine side of a box grater or process through your food processor fitted with the fine grater blade. Go for the finest shreds possible as they will dissolve easily in your washing machine. (Note: 4 ounces of well-cured soap will make approximately 2 C of grated soap.) If desired you may process the grated soap a second time in your food processor for an even finer powder.
Measure grated soap into mixing bowl. Add additional ingredients and stir well to combine. Check scent. If desired add additional essential oils to boost the scent of your soap (a few drops is plenty). Transfer to storage jar. That's it! Shake jar occasionally to keep powder from separating from soap if your gratings (like mine) are medium size. Use two to three Tb. per load, and add a splash of vinegar to your washer in the fabric softener cup for your freshest, cleanest clothes yet.
Homemade laundry soap is low-sudsing and is safe for use in most HE (High Efficiency) washing machines.

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And just for fun, if you are buying LüSa Organics soap from my website from your laundry soap project, leave a comment of "laundry day" on your order and I'll add a sample-sized product to your order when we ship! One time use per customer, please. xo




2 thoughts on “DIY Laundry Soap

  1. Kay says:

    Just wanted to say that I received my LuSa order last week….so beautifully & carefully packaged. I felt that I was getting a gift.
    thank you very much for your care & thoughtfulness…..& your wonderful products.
    Am really enjoying the tinted lip balm the spray the soap & the oil….all of it!
    & also the box! Such a treat……..& we all need a treat now & then
    Thank you thank you

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