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INGREDIENT DICTIONARY
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Potassium Sorbate

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INCI: Potassium Sorbate / CAS #: 24634-61-5

Potassium sorbate is a water-soluble preservative used in cosmetic formulations to support microbial stability in pH-controlled systems.

Key benefits

  • Supports preservation systems
  • Effective in acidic formulations
  • Compatible with combination systems
  • Widely used across formulation types

Behaviour in formulations

Potassium Sorbate performs in aqueous and emulsion systems but requires an acidic pH to function effectively.

Add to the water phase with mixing until fully dissolved. Adjust pH after incorporation.

 

Use level considerations

Use Rate (Min): 0.1
Use Rate (Max): 0.3

  • Leave-on: 0.1–0.3%
  • Rinse-off: 0.1–0.3%
  • Typically used in combination systems

Starter Use Rate: 0.15–0.25% in combination systems

Typically used at 0.1–0.3% and requires pH adjustment for efficacy.

Formulation summary

  • pH-dependent preservative
  • Often paired with sodium benzoate
  • Suitable for aqueous and emulsion systems
  • Requires acidic environment for efficacy

Quality notes

High-purity USP grade Potassium Sorbate with verified assay (99.95%) and low moisture content, supporting consistent formulation performance.

 

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