I hope everyone knows that caustic soda — sodium hydroxide — is really lye. It’s highly corrosive and has a viscosity 78 times that of water. How can any water authority consider it safe for ...

Discover the 6 health risks associated with chemical hair relaxers, from scalp burns to serious long-term conditions, plus ...

The process requires lye and a common pool chemical used to decrease pH. Sodium hydroxide isn’t super safe, but it is much less problem to buy, store, and use than battery acid. Aluminum ...