1/2 cup citric acid
1 cup baking soda
Eucalyptus essential oil, 20-30 drops
Peppermint essential oil, 10-20 drops
Ice cube tray or other mold
Spritz bottle or spray bottle with water
In a bowl, mix the citric acid and baking soda together with a whisk. Add peppermint essential oil (approximately 10 drops) and eucalyptus essential oil (approximately 20 drops). You can add more or less depending on how strong of a fragrance you desire. Begin spritzing the mixture. Only spritz once at a time and mixing in between until you get a crumbly mixture. (Approximately 10 spritzes.) If you spritz too many times in between mixing the mixture will begin to fizz, which means you are getting it too wet too fast.
Your finished consistency should lightly stick together. Firmly press the mixture into ice cube tray. If you have other molds like a mini muffin pan or silicone molds feel free to use those. Here is what it looks like when it is firmly packed. Let sit for about 10 minutes. After approximately 10 minutes, turn out shower bombs onto wax or parchment paper. You can transfer to a cooling rack to finish the drying process.