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SODIUM FORMATE.

Valuable CAS 141-53-7 / PRESERVATIVE

Sodium Formate is a versatile ingredient prized for its robust preservative capabilities, effectively protecting cosmetic formulations from microbial degradation. Beyond its primary role, it acts as a humectant, drawing moisture into the skin to enhance hydration, and may also contribute mild anti-inflammatory effects, offering a soothing action for irritated skin.

Preservative Humectant pH Adjuster Soothing Agent

Science

In skincare, Sodium Formate functions as a broad-spectrum preservative by interfering with the cellular processes of bacteria and fungi, thereby ensuring product stability and hygiene. As a humectant, it actively attracts and binds water to the skin's surface, improving epidermal hydration and reducing dryness. Furthermore, research indicates its potential for mild anti-inflammatory properties, which can help calm minor skin irritations. It also plays a crucial role in maintaining optimal product pH.


Research

Low confidence
Effective range N/A
Optimal

N/A


Transparency

Not commonly dusted

The Formula

Solubility
Water
Optimal pH 8 – 10
0 7 14

Stability

Sodium Formate exhibits high water solubility and is hygroscopic, meaning it readily absorbs atmospheric moisture, which may lead to clumping. While generally stable under normal conditions, improper storage—specifically, not keeping it in a cool, dry, airtight container—can cause decomposition over time and the potential release of formaldehyde.

Conflicts

  • strong acids
  • oxidizing agents

Safety

CIR Status
Safe with restrictions
Max tested
0.5%
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel concluded that Sodium Formate is safe when used in cosmetic formulations at current concentrations, provided the final product is non-irritating. The highest reported concentration in use is 0.34%, though the European Commission permits its use as a preservative up to 0.5% (expressed as acid). It has an FDA Generally Recognized As Safe (GRAS) status for indirect food additives.


Your Skin

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Low
Comedogenicity Unknown

Our Assessment

Valuable

Sodium Formate is a valuable multi-functional ingredient, offering effective preservation and hydration benefits, alongside potential soothing properties, suitable for all skin types.


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