How to make Bath Bombs with recipe!

Making bubbling bath bombs. Makes 12 x 200gram bath bombs. 9 x cups bicarbonate of soda 4 cups granular citric acid) 1/2 x cup SLS or SLSA 10 mls or 1oz polysorbate 80 50 mls fragrance 50 mls any carrier oil, we use olive oil (you can use, coconut, mac