What concentration of Disodium Phosphate is effective?

Typical effective concentrations of Disodium Phosphate are Typically <1% in cosmetic formulations as a pH buffer.

What skin types is Disodium Phosphate suitable for?

Disodium Phosphate is suitable for all skin types.

The Skin Formulary

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Researched by Helena DeMaria-Williams

Formula IngredientBuffering Agent

Disodium Phosphate

Q: What is Disodium Phosphate and what does it do in skincare?

Disodium Phosphate (disodium hydrogen orthophosphate) is an inorganic salt used in cosmetics primarily as a pH buffering agent. It is commonly paired with sodium phosphate (monosodium phosphate) to create a phosphate buffer system that maintains stable pH in formulations. It also has anticorrosive and masking properties.

Q: Can Disodium Phosphate cause skin irritation?

Disodium Phosphate has a low irritation risk. Disodium phosphate is well tolerated at cosmetic buffering concentrations. No EU CosIng Annex II or III restrictions apply.

Q: Is Disodium Phosphate safe to use during pregnancy?

Disodium Phosphate is rated "safe" for pregnancy use. An inorganic buffering salt with no known reproductive or developmental toxicity at cosmetic concentrations. Considered safe during pregnancy.

Q: Does Disodium Phosphate increase sun sensitivity?

Disodium Phosphate has a no sun sensitivity risk. Disodium phosphate does not increase photosensitivity. No sun protection precautions are required.

Q: What are the benefits of Disodium Phosphate for skin?

pH buffering, formulation stability, pH control, anticorrosive

Q: What skin types is Disodium Phosphate suitable for?

Disodium Phosphate is suitable for all skin types.

INCI: Disodium Phosphate

Disodium Phosphate (disodium hydrogen orthophosphate) is an inorganic salt used in cosmetics primarily as a pH buffering agent. It is commonly paired with sodium phosphate (monosodium phosphate) to create a phosphate buffer system that maintains stable pH in formulations. It also has anticorrosive and masking properties.