Sift Epsom salt, corn starch, and baking soda into a mixing bowl. Whisk together well.

Add powdered food coloring and continue to stir.

Add in almond oil and essential oils. Stir well.

Spray with 5-10 sprays of water (stir as you spray).

Once well combined, continue to spray mixture with water, one spray at a time, until you reach desired consistency. For me, this was 20 sprays total. It should be like damp sand. It looks slightly loose, but you can pack it together. It will look dryer than you expect.

NOW, mix in the citric acid until totally combined.

Press mixture firmly into metal bath bomb mold.

Remove from mold and let air dry overnight.

Plop in bath and enjoy!