When it comes to ingredients 'grades', which is best for bath bombs? I would have assumed pharmaceutical grade would be better because of purity, but is it? Is it even safe? I was reading somewhere that some food grade ingredients are better suited as opposed to the cosmetic grade of the same...
I'm wondering what everyone's favourite dyes and colourants are for use in Bath Bombs! I'm currently trying to perfect my recipe but the colourants are something that I'm stumped on.. mainly which ones are good and where to buy them! Especially where to buy them.
Anyone want to share their...