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Sodium Phosphate

Sodium Phosphate · Disodium Phosphate

A mineral salt used as a buffer to set and hold a formula's pH.

What it does

Sodium Phosphate is a salt of sodium and phosphoric acid. It acts as a buffer, resisting changes in pH so a formula stays at its intended acidity, which keeps other ingredients stable and predictable. It is a formulation ingredient rather than a skin active.

This page is public and indexed on purpose (unlike profiles and drops, which are unlisted) — it’s the citation behind shared ingredient cards, and it should be findable.
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