As I’ve shared with you before, I’m allergic and/or sensitive to just about everything under the sun.  (Sigh.)  For example, when it comes to laundry, I absolutely adore the scent of Gain… for about three minutes.  After that, my lungs and sinuses burn like hell, my throat gets tight, and I want to throw up.  (Sigh.)

In fact, this happens with many laundry soaps.  And when the smell doesn’t try to kill me, I usually get an itchy rash after washing my clothes in the stuff.  (Sigh.)  So what’s a girl to do?

I make my own laundry soap, of course!  Not only do I get to bypass the nasty allergy stuff, but I get to save tons of money as well.  It literally costs less than $2 to make enough laundry soap for a two month’s supply of detergent, and today I’m going to share with you how to make your own.

I used to make the liquid soap, which I liked very much.  However, when I make laundry soap, I typically make enough to last six months or a year, and that many liquid containers took up way too much room.  I had some friends who also made their own soap because they have a lot of small children, and they wanted to save money.  When I told them my dilemma, they turned me onto something called “Mom’s Super Laundry Sauce.”  (If you haven’t seen it yet, you can Google it and find it everywhere.)

The people who invented Mom’s did an excellent job as far as making a soap that saved money, but the basis for their soap is Fels Naptha, a strong bar soap made for laundry, and you might be surprised to learn that I was, in fact, allergic to it.  (Sigh.)

So, I used the basics of their recipe and created my own, which I will share with you now.

For every two – one quart sized jars (which hold one month’s worth of detergent each!), I use the following:

1½  bars of  Kirk’s Castile Soap
1¼  cup of 20 Mule Team Borax
1¼  cup of Arm & Hammer Washing Soda (This is not the same as baking soda!)
5 cups of hot tap water
2 1-quart sized Mason jars (NOT the wide mouth type)
canning funnel
wooden spoon
large saucepan

(If you can’t find Kirk’s, you can use any other coconut oil based soap.  Because I also make my own body/hand soap from scratch, I know that coconut oil soap is a very hard soap, and it’s an excellent cleanser.  It’s actually quite harsh on skin in that it cleans so well, it strips the skin of its own natural oils, which is why if you use it on your body, you want it to be mixed with other oils… But for laundry, we want the body’s oils to be removed from the clothing, so this is a good thing.)

To make enough for just 2 jars, it takes less than 30 minutes total time.  To make 12 jars which should last you a year, it will take under two hours total time.

Step 1: Grate 1½ bars of soap.  The easiest way is in a food processor.

Step 2: Mix the borax and washing soda together in a bowl.

Step 3: Put 5 cups of water in a large saucepan on high.

Step 4: When the water starts to slightly boil, add the soap and reduce heat to low.  Stir constantly until the soap has dissolved, but don’t let it boil over.

Step 5: Keep the pan on the hot burner, but turn off the heat.  Add the Borax/Soda powder, a little at a time, stirring constantly.  You want the powder to dissolve completely so you can’t feel any graininess on the bottom of the pan.

Step 6: Use a ladle and spoon the liquid equally into two Mason jars.  The canning funnel will help you not to spill.

Step 7: Add warm tap water to each jar until the liquid is exactly 2 inches from the bottom thread where the lid screws on.

Step 8: Screw on the lids and turn the jars upside down for 4 hours exactly.  (Use oven mitts to avoid burning yourself!)

During this time, do not move the jars.  The liquid and soap will separate into two layers, with the hard layer at the bottom (which is the top of the jar when it’s right side up).

At this point, I usually make enough soap to fill 12 jars which lasts at my house approximately one year.  Additionally, I usually have friends that ask me to make some for them, and I make some as gifts, so I repeat the process several more times, keeping the upside down jars in order so I’ll know when their time is up.

Step 9: At the 4 hour mark, open a jar, and use a butter knife to cut deep down through the solid soap.   Cut a tic-tac-toe, then run the knife around the mouth of the jar so that the hard stuff falls into the liquid.

Note:  If you have kids, you’ll want them here for the next step… That’s the fun part!

Step 10:  Unscrew the blade and bottom from your blender and screw them onto the jar.  Then place the jar on the blender and blend for approximately 40 to 50 seconds.  If you see that the mixture just isn’t blending, add a couple of teaspoons of warm tap water and try again.  After about 20 seconds, you’ll see the mixture turn white and “work its way up” to the top (which is really the bottom of the jar).  Mix for an additional 15 to 20 seconds after that.

Step 11:  Remove the blender attachment.  The laundry sauce should be warm and creamy, and it will look like sour cream or marshmallow fluff.

Step 12: To use, spoon 1 heaping teaspoon of sauce into an empty jar, and add a little water.  Fill your washing machine with clothes and water.  Shake the sauce/water mixture well and pour it over the clothes.

This detergent does not produce a lot of suds, but it gets your clothes very clean.  (My son works outdoors in the Florida heat screening pool cages, and he gets extremely dirty and sweaty.  His clothes always look and smell awesome after they’re washed in this.)

Note: We do use fabric softener with this detergent.

Time to talk:  Do you think you’ll ever try making this?  How much do you spend each month on laundry detergent?  Do you have any allergies?

22 thoughts on “Rub-a-Dub

    • You’ll love it! 🙂 And it’s really easy and fast to make. The only time it’s a problem is when I forget to check on it after the 4 hours, and it gets too hard. Then I have to microwave it to melt and let it sit again for a while before I blend.

  1. I make a lot of soap for sale, gifts and my own use. The shards that get grated off to make the bars pretty go into a zippie, which I give to a friend in exchange for her making liquid laundry soap. I need to send her a link to this post so we can try it out – storage is at a premium and I’m only one person so a single jar should last a long time. Thanks!

  2. Mmmmm…marshmallow fluff…oh, wait, you mean you can’t eat that?? Seriously though, every time I have to buy detergent it always brings my grocery bill way up. Fortunately, I get those big containers and only buy about two or three times a year. Still, this is a great idea and good that you have alternatives.

  3. This is very cool, Rachel! I might try it.
    Could you use an immersion blender? It seems to me that would be easier.
    I have seasonal allergies, but no other ones that I know about.

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