In a large mixing bowl, add the baking soda, citric acid, cream of tartar, pink Himalayan salts, and cornstarch. Whisk dry ingredients together.

Add the coconut oil. This binds all the ingredients together, so your bath bombs don’t crumble when you touch them!

Mix in mango butter and scented oil.

Add in 1 tablespoon of the pastel nonpareils and mix ingredients thoroughly. You may need to use your hands to break down any lumps and make sure everything is mixed in. The mixture is perfect when it holds together when you press it into your hands and feels like wet sand.

Pour some sprinkles into one half of the mold, then fill both sides of the mold with the mixture, press molds together, and grind to remove the excess mixture. Gently tap each side of the mold to release the bombs. To avoid the bombs breaking during the drying phase, I put them in a muffin tin. They fit perfectly!

Allow the bath bombs to dry for a minimum of 24 hours. If your climate is wet or cold, allow an additional 24 hours. My rule of thumb is that when it is hard to the touch, they are ready for the tub!

Store in an airtight container until ready for use.