I have to admit that I was a little bit surprised by the borax in the recipe that I foundI've seen recipes for bath bombs (fizzies) that have borax in them...but you really don't need it...and I wouldn't put it in them personally....
It is looking like an other recipe I found.My basic recipe -
2 cups baking soda
1 cup cornstarch
1 cup citric acid
combine dry ingredients in a bowl,
In a cup measure combine:
5 TB liquid oils (I like sunflower, rice bran, sweet almond...etc.)
2 TB water
1 - 1.5 TB fragrance oil (less for essential oils - .5 - 1 TB - add the extra as water.
drops of liquid color (I use lab or labomb colors)
So if it did not work I can still put the powder in a plastic bag and offers that it will be fizzy in the water ?Add the liquids to the powder and stir like crazy (the goal is no fizzing, but it may just a bit - just keep stirring like mad!)
mold into balls using ornaments (for big ones) or a meatballer (for little ones) get them filled good and tight, tap on counter all around and then release. Let dry on paper.
This is not as easy as it sounds, as a matter of fact it took me months (and I gave up for awhile!!!) to finally make them without cracking or not being hard enough, or falling apart. After I finally got it right I made bath bombs for days just to ingrain the look and feel in my head. Now I rarely have a problem, dry or humid, doesn't matter. It varies for everyone with climate, etc. You want the mixture to feel like damp sand....one thing though is if they don't work out you can just make fizzy bath powder and put it in a bag! (you can just do that anyway with this recipe - just omit the water, you can even use a bit less oil if you like!)