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SODIUM PHENOLSULFONATE

Description

Sodium phenolsulfonate, also known as phenol sulfonic acid sodium salt, is a versatile synthetic compound used in various skincare and cosmetic formulations. This water-soluble ingredient functions primarily as a preservative and antimicrobial agent, helping to extend the shelf life of products and protect against bacterial contamination.

The compound is derived from the sulfonation of phenol, resulting in a stable, mild preservative that is effective at low concentrations. Sodium phenolsulfonate exhibits broad-spectrum antimicrobial activity against both gram-positive and gram-negative bacteria, as well as certain fungi. Its efficacy is particularly notable in acidic environments, making it suitable for use in a wide range of pH-balanced skincare products.

In addition to its preservative properties, sodium phenolsulfonate may offer mild astringent effects, potentially benefiting oily or acne-prone skin types. The ingredient is generally well-tolerated and has a low potential for irritation when used at appropriate concentrations. It is often employed in leave-on and rinse-off formulations, including toners, serums, creams, and cleansers. Regulatory bodies such as the FDA and EU Cosmetics Regulation have approved sodium phenolsulfonate for use in cosmetic products within specified concentration limits.