Friday, April 13, 2012

Bar of Soap to Liquid Soap

Turn A Bar of Soap Into Liquid Hand Soap

savvyhouskeeping how to turn a bar of soap into liquid hand soap
I have a confession to make. I don’t like bar soap. It gets dirty and takes a long time to use up, so I usually get fed up with it and throw it in the trash.
Despite this, people seem to like to give me bar soap, which I feel guilty not using. So I have been buying liquid hand soap at $3 a bottle and putting the bar soap in a box with the intention of somehow finding a use for it.
Then it occurred to me that I might be able to convert the bar soap into liquid hand soap. Why didn’t I think of it before? I did some research and found out that it is easy to do. All it takes is melting the soap with water, adding a little vegetable glycerin, and voilà, you have made liquid hand soap.
savvyhouskeeping how to turn a bar of soap into liquid hand soap
So I tried it and was thrilled to find that it works great! From one bar of soap, I made close to 2 liters of hand soap, which will last a long time. The only thing I purchased for this project was a $2 bottle of glycerin at my local drug store:
savvyhouskeeping how to turn a bar of soap into liquid hand soap
Glycerin is made from plant oils and is commonly used in soaps, shampoos, moisturizers, etc. Since bar soap already has glycerin in it, I tried this experiment both ways, with and without the added glycerin. I found that the below recipe worked fine without the glycerin, except that the soap tended to clump and didn’t have as smooth a texture. It made enough of a difference that I would recommend adding the glycerin, but you can also try the recipe without it, if you wish.

How To Turn A Bar of Soap Into Liquid Hand Soap

Ingredients:
    1 c soap flakes
    10 c water
    1 Tbs glycerin

Equipment:

    Cheese grater
    A large pot
    Measuring cup and spoons
    A spatula for stirring
    A soap container with a hand pump
    A container to hold excess soap
    Funnel

Directions:

First, grate the soap. Get out your cheese grater, grab the soap, and get grating. I found this to be surprisingly easy, although the soap particles tend to float in the air as you grate. You can wear a mask to avoid breathing it in. When you’re done, the soap flakes look like grated Parmesan:
savvyhouskeeping how to turn a bar of soap into liquid hand soap
One bar of soap yielded a little over 1.5 cups of flakes. The recipe only uses one cup of soap flakes, so I put the remaining soap in a jar for later use.
In a large pot, combine 1 cup soap flakes, 10 cups water, and 1 Tbs glycerin. Turn on medium-low heat and stir until the soap dissolves. This happens fast, about a minute or two.
Let the soap cool completely, then pour into the containers using the funnel. That’s all there is to it!
savvyhouskeeping how to turn a bar of soap into liquid hand soap
As I mentioned, this recipe makes a lot of soap, about 6 bottles worth. I put the excess in a large bottle and am storing it under the sink. When I run out, I will simply pull out the big bottle and funnel some more into the smaller bottle.
You can also use this soap as body wash. To make it smell nice, add a drop or two of essential oil to the mix.
As I mentioned, the only thing I bought for this experiment was the glycerin. I reused the bottles and the soap was a gift. (Alternately, I could have saved soap slivers and made the hand soap that way.)
In the end, I used about $.40 worth of glycerin to make the equivalent of 6 bottles of hand soap. That’s a savings $17.60, well worth the half hour of my time it took to make the soap.
savvyhousekeeping dove soap liquid hand soap
UPDATE: I tried this with Dove Sensitive Skin Soap too. If you want to turn a bar of DOVE soap into liquid soap, click here for the recipe.

ETA: The kind of soap you use may be a bit of a wild card, since every soap will have different ingredients in it. I got the best results with a bar of Yardley soap, which did not even need the glycerin to become hand soap. In general, a higher quality soap will probably yield better liquid hand soap.
Dove Sensitive Skin Beauty Bar seems to be more difficult to turn into hand soap, which I would guess has something to do with the “sensitive” formula.
ETA II: I’m happy so many of you are finding this recipe helpful. If you are having trouble, such as thin or watery soap or “snot-like” (?) soap, I encourage you to read through the comments. Lots of people have reported back with their experiences with the recipe. It seems that sometimes letting the soap sit to thicken in the pot or hacking it with a hand blender to loosen it does the trick.
ETA III: For a solution on getting the soap to lather, try a foaming soap dispenser.

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