Preservatives are substances that can stop the growth of microorganisms or prevent the growth of microorganisms that can inhibit the reaction of products. In cosmetics, the role of preservatives is to protect the product from microbial contamination and to extend the shelf life of the product; to ensure the safety of the product and to prevent possible infections caused by the use of products contaminated by microorganisms. Preservatives are substances that can stop the growth of microorganisms or prevent the growth of microorganisms that can inhibit the reaction of products. In cosmetics, the role of preservatives is to protect the product from microbiological contamination and extend the shelf life of the product; to ensure the safety of the product and to prevent possible infections caused by the use of products contaminated by microorganisms