Fizzy bath bombs

How to make it

1. 

   1

   Mix the dry stuff

   Whisk baking soda, citric acid, cornstarch and salt. Break up every clump.

2. 

   2

   Mix the wet stuff

   Stir oil, water, color and fragrance in a small bowl.

3. 

   3

   Combine slowly

   Add the wet to the dry a few drops at a time, whisking fast so it doesn't fizz.

4. 

   4

   Test the texture

   Squeeze a handful. It should hold like damp sand. Spritz witch hazel if it crumbles.

5. 

   5

   Pack the molds

   Overfill both halves. Press them together hard and twist.

6. 

   6

   Dry overnight

   Leave them in the molds 1 hour, then pop them out. Let them harden 24 hours.