In our ongoing quest for the crafty-est summer ever, we decided to make some fizzy bath bombs. First of all, those things are way cool. Second, they can be pricey for something that dissolves that fast. It was a bit cheaper (and more fun) to make our own.
I looked around at various sets of directions and recipes online. Then kind of consolidated and made up my own.
Here is what we used:
1 cup baking soda
1/2 cup citric acid (I found it in the canning section at Walmart, $3 for this little jar, I bought two jars which is enough to make about 3 batches and have a little bit left over to sprinkle on sliced apples for a picnic)
1/2 cup corn starch
2 tablespoons salt
3 tablespoons coconut oil (sofftened, not melted or hard)
about 8 tablespoons liquid (we used water)
few drops of scented oil (we had lavender)
The salt that I bought was the wrong kind, but I had some of this in the cabinet, which worked pretty good. I'd purchased ice cream salt, that was too chunky to use. Epsom salt would probably be fine too.
You can use food coloring, if desired.
Oh and glitter! Ours was in a magic wand shaker that Aunt Sissy gave to us.
Stir well. Then mix the food coloring and water together in a squirt gun. I saw that Martha Stewart used a mister/sprayer thingy in her directions, but we didn't have one of those.
The citric acid has a reaction to the baking soda when you drop the bomb in the tub, that is what makes the fizziness. It's also what you want to prevent from happening when you are making them. Save the fizz for the tub, not the mixing bowl!
The trick is to have one person add the liquid while the other stirs non stop. A bit of fizz breaks out with every squirt, but whip it in fast and it goes away.
Mix and mix while adding spritzes of water until you get the consistency that will hold when you squeeze it into a ball.
Next, press it into molds.
We used the bottom of a measuring cup to press the mixture down hard, and get it compacted. Next, you wait a day or two till it sets up.
We scraped up all of our crumbs, and all the remnants in the bottom of the bowl and on the spoon, then added some water to see if it would bubble up, because we couldn't wait that long. And yep, it was as fizzy as an alka seltzer!
The food coloring and the glitter make the bath water pretty. But everyone might not enjoy that as much as we do. You can always leave that stuff out.
We got about 6 large hearts and 6 smaller tartlet shapes out of our batch.
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