Database/Buffering/Sodium Sesquicarbonate
100% natural origin · ISO 16128

Is Sodium Sesquicarbonate natural?

Yes. Sodium sesquicarbonate is a mineral carbonate/bicarbonate salt; sodium and carbonate are natural-origin under ISO 16128.

INCI nameSodium Sesquicarbonate
CAS533-96-0
FunctionBuffering · Bulking
FeedstockSourced from the natural mineral trona or crystallised…

How we scored it

Naturally occurring mineral salt (sodium carbonate/bicarbonate complex, e.g. trona); mined or crystallised, no organic carbon.
What counts. ISO 16128-2 scores the atoms that remain in the final ingredient. Reagents, solvents, catalysts and protecting groups used during manufacture leave no mass behind and are not counted.

Where it comes from

Sourced from the natural mineral trona or crystallised from mineral soda ash and sodium bicarbonate. Both sodium and carbonate fragments are mineral in origin.

In plain English

A mild mineral cleansing and buffering salt related to baking soda, mined or crystallised from natural mineral deposits. It is entirely mineral-derived.

References

  1. 1ISO 16128-1:2016 and ISO 16128-2:2017 — Guidelines on technical definitions and criteria for natural and organic cosmetic ingredients and products. ISO, Geneva.
  2. 2SODIUM SESQUICARBONATE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  3. 3SODIUM SESQUICARBONATE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=SODIUM%20SESQUICARBONATE