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POTASSIUM ACETATE.

Valuable CAS 127-08-2 / FILM FORMING

Potassium Acetate is a highly functional ingredient vital for maintaining skin hydration and formulation integrity. It acts as a potent humectant, effectively attracting and retaining moisture, while also serving as a crucial buffering agent to ensure product pH stability.

Humectant pH Adjuster / Buffer

Science

Within skincare formulations, Potassium Acetate functions primarily as a humectant, drawing water molecules from the environment into the skin's outermost layer, the stratum corneum, thereby enhancing hydration. Concurrently, it acts as an effective buffering agent, stabilizing the product's pH within a targeted range, which is critical for optimizing ingredient efficacy and preventing potential skin irritation.


Research

Low confidence
Effective range N/A
Optimal

N/A


Transparency

Not commonly dusted

The Formula

Solubility
Water
Optimal pH 7.5 – 9
0 7 14

Stability

Potassium Acetate is a hygroscopic and deliquescent compound, requiring storage in tightly sealed containers within dry, well-ventilated environments to mitigate sensitivity to air and moisture. Despite these characteristics, the ingredient is considered stable under appropriate storage conditions.

Conflicts

  • strong oxidizing agents

Safety

CIR Status
Safe with restrictions
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel has assessed Potassium Acetate as safe for use in cosmetic products, contingent upon adherence to specified concentration limits, purity standards, product types, or manufacturing methods. Acute toxicity studies demonstrated low oral, dermal, and inhalation toxicity. While mild eye irritation was noted in one study, dermal irritation studies consistently showed no adverse effects.


Your Skin

Yes Normal
Yes Dry
No Oily
Yes Sensitive
Irritancy Low
Comedogenicity Unknown

Our Assessment

Valuable

Potassium Acetate is a valuable component for cosmetic formulations, offering effective humectant properties and essential pH stabilization, underpinned by a demonstrated low risk of irritation.


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