Microwaving Soap for DIY Laundry Detergent

fels-naptha

I’d seen a few people on Pinterest who had microwaved their Zote or Fels Naptha Soap and then crumbled it. Since I’d always grated my own soap (which takes FOR-EV-ER), I was very excited about this possibility.

(Looking for my Laundry Detergent Recipe (non fragrant) or my Better Laundry Detergent Recipe?)

So here’s what I would have wanted to know…

soap2

{NOTE: I bought and microwaved Fels Naptha very successfully when I wrote this, but I didn’t take pictures. So for pictures sake, I bought the Zote soap, mostly out of sheer curiosity, as I’ve never used that particular soap before. It was also less expensive. BUY FELS NAPTHA. Don’t buy the Zote. At least for microwaving purposes… it didn’t do as well. Anyway, comments explaining the differences I noted between the two soaps will be bracketed as this paragraph has been.}

{For point of reference, the Zote bar was 2X as thick as the Fels Naptha bar.}

{For point of reference, the Zote bar was 2X as thick as the Fels Naptha bar.}

1) Make sure you put it on a big plate. It’s going to expand. You might also consider covering that plate with wax paper to reduce the amount of mess you’ll be dealing with later.

soap3

2) Cut the soap up in 3 or 4 pieces so that it microwaves evenly.
{Because the Zote bar was so thick, I had to cut it into 8 or 9 pieces.}

3) Microwave it for 1.5 to 2 minutes.

soap4

4) LEAVE IT ALONE. No really. Don’t run and touch it. IT’S HOT. And if you take it out of the microwave, it’s going to smell REALLY strong. So, make yourself leave it in the microwave for about an hour. No, I’m not kidding. Also, if you pick it up at this point, aside from burning yourself, you’re going to re-compress the part of the soap that you’re touching, which will make it harder to crumble later.

photo (26)

5) After letting it sit for an hour or so, remove it from the microwave, hold it over a bowl, trash bag, or whatever, and crumble it up in your hands. This part is kinda fun. It just disintegrates.
{As you can see in the picture, the Zote soap didn’t crumble as well. It was always a little gummy.}

And now it’s ready to use!

Why does this work? As the soap heats, there is some kind of chemical reaction that creates tiny little bubbles throughout the bar of soap. The end result is a much more porous, less-dense material that crumbles easily.

Anyway, enjoy!

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