The Index · Chelating agent / pH adjuster
Disodium Phosphate
Disodium Phosphate
Disodium Phosphate is a chelating agent or pH adjuster used for formula stability.
FunctionalFunctional ingredient, not graded for skin benefits
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Disodium Phosphate is a chelating agent or pH adjuster used for formula stability.
What it does
Adjusts pH or binds metal ions to support formula stability and preservative performance.
The evidence
Functional ingredient (not graded for skin benefits): Processing aid (chelator or pH adjuster) with long cosmetic use; not a featured skin active. Credible chemical identity and cosmetic-use context come from CIR/SCCS/manufacturer INCI definitions and databases such as SpecialChem/PubChem[1].
How to use it
Expect this as a supporting INCI line item unless labelled as a featured active.
What it does in the formula
Functional ingredient — not graded for skin benefits
Disodium Phosphate is a chelating agent or pH adjuster used for formula stability.[1]
Safety & limits
Source and region, always
all — Used in cosmetics within conventional leave-on/rinse-off levels; see cited safety literature.[1] CA US EU UK
Sources · 2
Numbered as cited in the text
- [1]Cosmetic Ingredient Review. Cosmetic Ingredient Review safety assessment. CIR (2010)regulator
- [2]SpecialChem. SpecialChem INCI profile: Disodium Phosphate. SpecialChem (2024)other
Revision history
18 Sept 2026Drafted by botTheSkindex Desk