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Sodium Metabisulfite

Description

Sodium Metabisulfite is a versatile compound widely used in skincare formulations as a preservative and antioxidant. This white, crystalline powder is composed of sodium, sulfur, and oxygen atoms, forming a chemical structure that effectively inhibits microbial growth and prevents oxidation in cosmetic products.

In skincare, Sodium Metabisulfite primarily functions as a stabilizer, extending the shelf life of various formulations by neutralizing free radicals and preventing the degradation of active ingredients. Its antioxidant properties help protect sensitive components from oxidation, maintaining product efficacy over time.

This ingredient is particularly valuable in formulations containing vitamin C, as it helps prevent discoloration and maintains the potency of ascorbic acid. Sodium Metabisulfite also acts as a reducing agent, capable of breaking disulfide bonds in hair and skin proteins, making it useful in certain hair removal and exfoliating products.

While generally considered safe for use in cosmetics, some individuals may experience sensitivity or allergic reactions, particularly those with sulfite allergies. As with any active ingredient, proper concentration and formulation are crucial to ensure product safety and effectiveness. Sodium Metabisulfite is typically used in low concentrations, ranging from 0.01% to 0.1%, in skincare products.