Homemade bath bombs

How to make it

1. 

   1

   Mix the dry ingredients

   Whisk the baking soda, citric acid, cornstarch and Epsom salt in a large bowl. Break up any lumps.

2. 

   2

   Mix the wet ingredients

   Stir the melted oil, fragrance and colorant together in a small bowl.

3. 

   3

   Combine slowly

   Drizzle the wet mix into the dry a little at a time, whisking fast. Go slow or it starts fizzing.

4. 

   4

   Check the texture

   Squeeze a handful. It should hold together like damp sand. If it crumbles, spritz once or twice with witch hazel and mix.

5. 

   5

   Pack the molds

   Overfill both halves of the mold and press them together hard. Wipe off the extra around the seam.

6. 

   6

   Unmold gently

   Wait 1 minute, then tap and lift one half off. Ease the bomb onto the tray.

7. 

   7

   Let them dry

   Leave them 24 hours in a dry room. Then wrap them airtight so humidity doesn't set them off.