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Potassium Sorbate

Description

Potassium sorbate is a widely used preservative in skincare and cosmetic formulations, recognized for its effectiveness against yeasts and molds. This white, crystalline powder is the potassium salt of sorbic acid, a naturally occurring compound found in some berries. In skincare products, potassium sorbate functions primarily to extend shelf life and maintain product integrity by inhibiting microbial growth.

With a pH range of 4.5-6.5, potassium sorbate is particularly suitable for slightly acidic formulations. It exhibits broad-spectrum antimicrobial activity, especially against fungi, while being less effective against bacteria. This preservative is often used in conjunction with other antimicrobial agents to provide comprehensive protection against various microorganisms.

Potassium sorbate is generally considered safe for use in cosmetics and is approved by regulatory bodies worldwide. It is non-irritating and non-sensitizing for most individuals, making it suitable for a wide range of skin types. The ingredient is water-soluble and typically used at concentrations of 0.1-0.5% in skincare formulations. Its efficacy can be influenced by factors such as pH, water activity, and the presence of other ingredients in the product.