Sodium Phosphate

Sodium phosphate is an inorganic phosphate salt used in cosmetics as a buffering and pH-adjusting agent. It stabilizes formula acidity, supports consistency, and keeps finished pH within gentle, skin-compatible ranges.
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Ingredient Snapshot

Overview
A buffering salt that keeps a product's pH gentle on skin.
Category
Barrier Support
Type
Buffer

Ingredient Ratings

Overall Rating

Good

Comedogenic Risk

None

Skin Benefits

It helps products stay gentle on skin by keeping acidity in a skin-friendly range, and a consistent pH can reduce stinging and maintain formula performance over time.

Uses In Skincare & Cosmetics

It's used in cleansers, lotions, and serums as a pH adjuster within multi-ingredient formulas, and found in exfoliating products to balance acids for predictable use.

Comedogenic Rating

This ingredient is not typically evaluated for comedogenicity, and no standardized rating is available.

Safety

It has low inherent irritation potential; discomfort is more likely from an improperly adjusted final pH than from the ingredient itself. No specific cosmetic restrictions are commonly noted.

Is Sodium Phosphate a Good Ingredient?

It rates Good as an effective buffer that maintains skin-compatible pH, supporting formula performance and comfort. It offers minimal direct skin benefits beyond pH control, which is what keeps it out of the top tier.

Products with Sodium Phosphate

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