Potassium sorbate
Potassium sorbate is a preservative commonly used in cosmetics and personal care formulations to help prevent the growth of yeasts and moulds. It is synthetically produced by reacting potassium hydroxide with sorbic acid (a compound that does occur naturally in some berries, but not in quantities large enough for commercial use).
Function and effectiveness
- Works best in products with a pH of 5 or below.
- Effective against yeasts and moulds, but only partially effective against bacteria.
- Best suited to water-based products such as toners, mists, or linen sprays.
- Not suitable as a standalone preservative in creams or emulsions, but can be used alongside a broad-spectrum preservative (e.g. Geogard 221) to enhance protection.
Usage guidelines
- Typical usage rate: 0.1–0.5% of the formulation.
- Add to the water phase below 60 °C.
- If adding after emulsification, pre-dissolve in a portion of the water phase for easier incorporation.
Note: Potassium sorbate does not replace a broad-spectrum preservative but can provide useful extra protection in high-water formulations.
Common Name: Potassium Sorbate
INCI: Potassium sorbate
Certification: Conventional
Appearance: Fine cream granules
Origin: China
Solubility: Water
Usage Rate: 0.1% - 0.5%
pH Range: 3 - 6
Vegan: Yes
Animal Tested: No
All our products are for external use only.
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General Care, Safety & Storage Information:
- Go Native New Zealand specialise in skincare, cosmetic and aromatherapy ingredients. We are NOT licensed to sell food. This means our products are not food grade, for this reason we advise you not to use our products internally, or for culinary purposes
- Always follow product-specific notes or directions.
- Keep all products out of reach of pets and children.
- We recommend storing all products in a dark, damp-free, cool place at room temperature (unless stated otherwise).
- Keep your products away from direct sunlight.
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