POTASSIUM SORBATE
Commonly Found In
Overview
POTASSIUM SORBATE is the potassium salt of sorbic acid, used in cosmetics as a preservative to prevent the growth of molds, yeasts, and some bacteria. It is considered one of the milder cosmetic preservatives and is often marketed as a 'natural alternative' to parabens, though the commercial product is synthetically produced. Potassium sorbate is permitted in cosmetics in the EU at a maximum of 0.6% (as sorbic acid), in Japan, and in the US without a specific cap under cosmetic preservative status. It is most effective at acidic pH levels (below 6.5), making it well-suited for toners, serums, and other acidic formulations.
Also known as: Potassium Sorbate, 2,4-Hexadienoic acid potassium salt, E202 (food additive)
Key Benefits
Potassium sorbate functions as a preservative rather than an active skin-conditioning ingredient. Studies suggest it is effective against mold and yeast at low concentrations, which may help maintain formulation integrity and safety. It does not provide direct skin benefits but contributes to product safety by preventing microbial contamination.
Supporting Research
- β’ CIR Expert Panel β safety assessment confirming potassium sorbate safety at cosmetic preservative concentrations
Skin Compatibility Ratings
Comedogenic Rating
Non-comedogenic; no skin-clogging potential at preservative concentrations
Source: CIR Expert Panel; cosmetic dermatology consensus
Irritancy Rating
Generally well tolerated; occasional contact sensitization reported. More common irritation if combined with other sensitizing preservatives. Considered among the gentler preservative options.
Source: CIR Expert Panel; contact allergy literature
Typical Use Concentration
Range
0.1β0.6%
Optimal
0.2β0.5%
EU Annex V maximum: 0.6% as sorbic acid (potassium sorbate equivalent). US and Japan permit use. Effective at low concentrations in acidic formulations.
Works Well With / Avoid
Works Well With
Use With Caution
Most effective at pH 3.0β6.5; efficacy significantly decreases above pH 6.5. Often paired with sodium benzoate or other preservatives for broader spectrum protection. Synergistic with low pH formulations.
Commonly Found In
Global Regulation Summary
Overview of current status across major international markets.
Detailed Regional Status
| Region | Status | Max Conc. | Conditions | Source |
|---|---|---|---|---|
| πͺπΊ EU | Allowed | - | - | Official β |
| πΊπΈ USA | Allowed | - | - | Official β |
| π―π΅ Japan | Allowed | - | - | Official β |
| π°π· Korea | Unknown | - | - | Official β |
| π¬π§ UK | Banned | - | Follows EU regulations (V/4) | Official β |
π Why Regulations Differ
Potassium sorbate is permitted in EU (max 0.6% as sorbic acid under Annex V), US, and Japan. It is considered a gentler alternative to parabens. No major cross-market divergence.
Regulation Analysis
Regional Agreement
Banned in UK but allowed in EU, USA, Japan.
Category Comparison
There are 122 ingredients in the FRAGRANCE category. 100% are banned in at least one major market.
Strictness Ranking
πΏ Natural Sources
Sorbic acid (the parent compound) was first isolated from the berries of the mountain ash tree (Sorbus aucuparia) in 1859. Potassium sorbate is the potassium salt, commercially manufactured.
π How It's Made
Produced by neutralizing sorbic acid with potassium hydroxide. Sorbic acid is manufactured from crotonaldehyde and ketene through a series of chemical reactions.
π Uses in Cosmetics
Used in cosmetic products primarily for fragrance, preservative.
π¬ Other Applications
One of the most common food preservatives worldwide β used in cheese, wine, baked goods, dried meats, soft drinks, and fruit juices. Also used in pharmaceuticals and animal feed.
π‘ Fun Facts
- β’ Potassium sorbate is one of the most gentle food preservatives β it's considered so safe that it's allowed in organic food in some countries
- β’ Wine makers commonly use it to prevent re-fermentation in sweet wines after bottling
- β’ It gets its name from the Sorbus tree (mountain ash/rowan) from which sorbic acid was first discovered
Data Sources
- β’ EU Cosmetics Regulation Annex V (preservatives)
- β’ CIR Expert Panel safety assessment of sorbic acid/potassium sorbate
- β’ FDA cosmetic preservative database
- β’ Japan MHLW cosmetic ingredient database
Last data verification: 2026-04-12
Related Ingredients
BENZOIC ACID
BUTYLPARABEN
ETHYLPARABEN
METHYLPARABEN
PHENOL
SODIUM BENZOATE
Learn More
Frequently Asked Questions
What is POTASSIUM SORBATE used for in cosmetics?
POTASSIUM SORBATE is primarily used for fragrance in cosmetic products. It also serves as preservative. The ingredient is commonly found in perfumes, colognes, and scented cosmetics.
Which countries regulate POTASSIUM SORBATE?
POTASSIUM SORBATE is banned in UK. The ingredient is freely allowed in EU, JP, US.
Are there alternatives to POTASSIUM SORBATE?
Due to regulatory restrictions on POTASSIUM SORBATE, cosmetic manufacturers often use alternative ingredients with similar functions. For fragrance, alternatives may include other approved ingredients in the same category. Consult product labels for specific formulations, and look for products compliant with your region's regulations.
Where can I find official regulation information about POTASSIUM SORBATE?
Official information about POTASSIUM SORBATE regulations can be found on government websites: EU CosIng database, US FDA Cosmetics page, Japan MHLW cosmetics standards, UK Government cosmetics guidance, and Korea MFDS. Always verify regulatory status with these official sources before making formulation decisions.
Disclaimer
The information on this website is for educational and informational purposes only and is not intended as medical advice. While we strive for accuracy based on official government databases, cosmetic regulations change frequently. Always consult with a qualified professional or refer to the latest official regulatory documents for compliance. We are not responsible for any actions taken based on the information provided here.