Incorporate oils slowly into dry mixture. Introducing too much moisture at once can cause the shower fizzier to react prematurely. Distribute the shower bomb mixture evenly in 5 small bowls.
Spritz the mixture with water gradually and combine quickly after each spray. Continue to spritz until the mixture feels like damp sand (not wet!). It will very much like the texture of a bath bomb mixture. Sprinkle each color mica into the small bowls and add more as you incorporate it into the mixture until it turns into the color shade you want.
Add all of the different colors into the shower bomb molds. Pack and press mixture firmly into molds. Layer the colors however you’d like... get creative with it!
Allow to dry for 24 hours. Gently press shower tabs out of molds once dry.