Re: Epsom salts

Epsom Salts BP is what you are after, it is certified to be ONLY magnesium sulphate, you can get different grades for bath salts, which can contain other "impurities" which may not be safe (usually contains warnings if that is the case).

I use Bell's Epsom Salts BP (packaged at 100g, 200g, 500g, etc)