Sodium Bisulfate ●
TL;DR. This ingredient is primarily a pH adjuster, used to lower the pH of cleansers, bath products, and other water-based formulas. It can also help control alkalinity in systems where a dry acidulant is easier to handle than a liquid acid.
What does Sodium Bisulfate do in a cosmetic formula?
This ingredient is primarily a pH adjuster, used to lower the pH of cleansers, bath products, and other water-based formulas. It can also help control alkalinity in systems where a dry acidulant is easier to handle than a liquid acid.
Is Sodium Bisulfate clean?
From a clean-beauty perspective, this ingredient is generally accepted and not a common restricted-list concern. The main consideration is irritation potential at low pH or high concentration, so final-product pH matters more than its presence alone.
Is Sodium Bisulfate sustainable?
This material is inorganic and typically made from mineral-derived sodium salts and industrial acid chemistry, rather than renewable plant feedstocks. It does not biodegrade in the organic sense, but it dissociates into simple ions in water and is not expected to bioaccumulate.
Is Sodium Bisulfate COSMOS-approved?
It is generally permitted in COSMOS-natural and COSMOS-organic formulations as an inorganic pH adjuster when purity and final-formula requirements are met. Its Green Chemistry profile is mixed, with simple chemistry and low bioaccumulation concern, but non-renewable sourcing and acid manufacturing keep it from being a stronger fit.
How does Sodium Bisulfate work chemically?
This compound is an inorganic acid salt that dissolves readily in water and releases sodium ions plus an acidic sulfate species, which is why it efficiently lowers pH. It is typically used at q.s. levels with direct pH monitoring, is stable as a dry solid, and must be balanced carefully because excess addition can make a formula too acidic for skin or eye-area use.
Last updated 2026-08-20