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POTASSIUM SULFITE

Description

Potassium sulfite is an inorganic compound with the chemical formula K2SO3. In skincare formulations, it primarily functions as an antioxidant and preservative. This white, crystalline solid is highly soluble in water and exhibits reducing properties, making it valuable in protecting cosmetic products from oxidation.

As an antioxidant, potassium sulfite helps prevent the degradation of other ingredients in skincare formulations, particularly those sensitive to oxygen exposure. It can extend the shelf life of products and maintain their efficacy over time. In some formulations, it may also contribute to skin brightening effects by inhibiting melanin production.

The preservative action of potassium sulfite is particularly effective against yeasts and molds, helping to maintain product integrity and safety. However, its use is regulated in cosmetics due to potential sensitivity in some individuals, particularly those with sulfite allergies.

In skincare, potassium sulfite is typically used in concentrations ranging from 0.01% to 0.1%. It's compatible with a wide range of cosmetic ingredients but may be less effective in highly acidic formulations. When formulating with potassium sulfite, it's crucial to consider its potential interactions with other ingredients and its pH-dependent efficacy.