Sodium Phosphate

Sodium phosphate is a group of inorganic sodium salts (mono, di, and tri-sodium phosphate). It has pH buffering, chelating, and stabilizing properties.

This means it helps maintain a formula's acidity, enhances preservative performance, and prevents unwanted changes caused by metal ions or hard water.

Sodium phosphate is considered safe for use in cosmetics according to the Cosmetic Ingredient Review (CIR); it also has a long-established food-grade safety rating as well.

Though some sources claim sodium phosphate can help "energize skin cells", this claim is not strongly supported by independent scientific studies.