Start by weighing out all of your ingredients.
Add all of your dry ingredients into a large mixing bowl. Be cautious of the SLSa and wear a face mask as needed.
Add all of your liquid ingredients to the bowl of dry ingredients.
Mix it all together. I will normally start with the spatula to get it started, then I mix the rest up with my hands.
After the batch is fully mixed, split into two equal parts. One for the red and one for the colorant.
Add the colorant to the blue bubble bar dough and mix it well.
Add the colorant to the red bubble bar dough and mix it well.
Get a piece of freezer paper and lay it down on the counter.
Smush your blue bubble bar dough until it is a long rectangle shape.
Do the same for the red dough.
Place the red dough on top of the blue dough and smush them together.
Rough the dough up. It can sometimes be helpful to place on a smaller piece of freezer paper and use that to help you roll it. It will try to crumble on you. Just do your best to keep it together while rolling it.
After you are done rolling the dough up, shape it until it is a roll shape. Think of the shape of a pringles can or a tootsie roll. This is what we are going for.
Using a soap cutter, cut the bubble bar into slices.
Allow to dry for 3-7 days until hard.
Enjoy!