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Nisin

* A preservative

Nisin is an antimicrobial preservative found in cosmetics and beauty products. Although it is more commonly used as a preservative in a variety of packaged foods ranging from cheeses to alcohol, it is used in cosmetics because it of its antibacterial properties and 34 amino acid residues (Wikipedia). Nisin is a rare example of a "broad-spectrum" bacteriocin effective against many organisms and is soluble in water; it can be effective at levels nearing the parts per billion range and can be used in a variety of beauty products and cosmetics, extending their shelf life at low concentrations.

* A preservative

Functions:

Nisin is an antimicrobial preservative found in cosmetics and beauty products. Although it is more commonly used as a preservative in a variety of packaged foods ranging from cheeses to alcohol, it is used in cosmetics because it of its antibacterial properties and 34 amino acid residues (Wikipedia). Nisin is a rare example of a "broad-spectrum" bacteriocin effective against many organisms and is soluble in water; it can be effective at levels nearing the parts per billion range and can be used in a variety of beauty products and cosmetics, extending their shelf life at low concentrations.

Safety Measures/Side Effects:

Nisin is not considered to be an irritant and is considered safe for use topically. The EWG gives Nisin a safety rating of 81%. Nisin was found to cause neurotoxicity and organ toxicity in rats and rabbits, but the last published study was in 1952. It has been used safely and frequently in food products throughout the world for decades.

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