These coconut cream bath bombs have a glow in the dark mica to add a little fun and excitment to bath time. These are only available for a limited time, so get in quick! There's also one 300ml bath crumble jar, which uses the same ingredients:
 
Sodium bicarbonate, citric acid, polysorbate 80, deodorised cocoa butter, coconut cream fragrance oil, and assorted mica pigments including a glow in the dark one.
 
This glow in the dark mica does not require UV to glow, but for best results I recommend putting them next to a bright light for a while before your bath.
 
If the idea of a glowing bath appeals but these aren't rainbow enough for you, check out the Glow in the Dark Pride Crumbles!