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pH Adjuster

POTASSIUM TARTRATE

CAS 921-53-9 Updated
86

Safety score · 0–100

Good

Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.

About

A potassium salt of tartaric acid — long used in food and cosmetics as a gentle buffering agent. Mild, well-tolerated, and very low irritation at typical formulation levels.

Function

BUFFERING

Skin benefits

  • Buffering and pH adjustment
  • Mild chelating support
  • Long history of food and cosmetic safety

Known concerns

  • Possible mild irritation in concentrated form
  • No significant concerns at cosmetic concentrations

References

EU

EU CosIng database

European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.

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Check your shelf

Find POTASSIUM TARTRATE in your products.

Scan any cosmetic product with LuxSense to see if it contains POTASSIUM TARTRATE and get a full ingredient breakdown with safety scores.

This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve — always read the physical product label and consult a healthcare professional for personal concerns.