Potassium Sorbate

Potassium Sorbate is the potassium salt of sorbic acid, a water-soluble, pH-dependent preservative. Formulators use it to keep products fresh by limiting yeast and mold growth in suitably acidic formulas.
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Ingredient Snapshot

Overview
A preservative that keeps formulas fresh by limiting yeast and mold.
Category
Preservative
Type
Preservative

Ingredient Ratings

Overall Rating

Good

Comedogenic Risk

None

Skin Benefits

Helps keep formulas fresh longer by discouraging spoilage from microbes. Supports product safety so textures and scents stay pleasant over time.

Uses In Skincare & Cosmetics

Common in water-based products like toners, gels, and moisturizers to preserve stability. Frequently included in serums and cleansers that are stored for extended periods.

Comedogenic Rating

This ingredient is not typically evaluated for comedogenicity, and no standardized rating is available.

Safety

Typically well tolerated at cosmetic use levels, though it may cause mild stinging or redness on sensitive or compromised skin. Best used in acidic systems; higher concentrations can increase irritation. In the EU, sorbic acid and its salts are permitted up to 0.6% (as acid equivalent).

Is Potassium Sorbate a Good Ingredient?

It's a reliable, water-soluble preservative that effectively suppresses yeast and mold in acidic formulas, extending shelf life with generally low irritation, which is enough for a Good rating. Its performance is pH-dependent, so efficacy is strongest in lower-pH products.

Frequently Asked Questions

Find answers to some of the most frequently asked questions about potassium sorbate.

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References

Products with Potassium Sorbate

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