I occur naturally in natron, a deposit that forms in salt lake beds: usually, though, I’m manufactured through a mixing called the ‘solvay process.’ Pretty cool.

I’m used to give bath bombs their firm, solid shape (and their fun fizziness). When mixed with Citric Acid, I form a hard base that reacts when it hits your bath water: together, we release carbon dioxide, which you see in the form of air bubbles. In addition to being fun to watch, that process helps diffuse all of the bath bomb’s moisturising, nice-smelling ingredients into your bath water

Not to brag, but I’m in literally every awesome Allkinds Bath Bomb.