binomial name: sodium sesquicarbonate
sodium sesquicarbonate is a combination of two separate salts that ameliorates hard water by removing calcium and magnesium, thereby enabling gentle product emollients to soften and protect the skin and hair.
benefit: this adaptable “double” salt is used to control the acid/base balance of cosmetic products and plays a starring role in many bath salts. art lovers might be interested to know it’s also instrumental in the archeological conservation of copper antiquities. this same balancing of copper oxides is good news for hair as well: copper occurs in most urban waters and can negatively impact hair color.
The following products contain sodium sesquicarbonate: