Calcium sodium borosilicate is a chemical compound, a glass component composed of calcium and sodium borosilicates, a synthetic product obtained by fusing boron oxide, sodium oxide, calcium oxide and silica. Borosilicate is a material recently used for the production of glass and glassware, light bulbs, X-ray tubes, industrial piping, flat computer screens, mobile phones and more.

Safety
Borosilicate ingredients are inert, insoluble and have limited power to penetrate the skin.
Borosilicate glasses are chemically non-reactive.

What it is used for and where
Cosmetics
Bulking agent. It regulates the water content, dilutes other solids, can increase the volume of a product for better flow, acts as a buffer against organic acids, helps to keep the pH of the mixture within a certain level.
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CAS: 65997-17-3 generic