Basic bath bomb
450g baking soda
226g citric acid
6g essential oil/fragrance oil
witchhazel (in a mister bottle)
Blend very well the baking soda and citric acid.
Add colour and fragrance and blend.
Spritz with witchhazel and blend until it is the consistency of wet sand.
It should clump in your hand when you squeeze it.
Pack very tightly into the 2 halves of the mould. Press together. Wipe away any excess mixture.
Press the mould gently and the balls will pop out.
Leave to dry for 48 hours.