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Potassium Phosphate

What Potassium Phosphate is & what it does

A buffering salt used to adjust and maintain a formula's pH. It helps keep the product stable and gentle.

What does Potassium Phosphate do in skincare?

Potassium Phosphate is a mineral salt used mainly as a buffering agent in cosmetic formulas. It helps keep a product's pH within a stable, intended range, which supports both performance and shelf stability. It can also act as a chelating helper in some systems.

Is Potassium Phosphate safe?

Potassium Phosphate is a common pH-adjusting salt used at low levels in cosmetics and is generally regarded as well tolerated. It is also encountered in food and other everyday products. If you have particular sensitivities, a dermatologist can advise on specific formulas.

Is Potassium Phosphate natural or synthetic?

Potassium Phosphate is a mineral salt of potassium and phosphoric acid, typically manufactured for cosmetic use. It is inorganic and contains no animal-derived material, so it is generally suitable for vegan products.

Sunscreens with Potassium Phosphate

We rate 45 sunscreens that contain it, showing the top 10 by overall score:

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