The microbial safety of cosmetic products is an important consideration. It is integral to ensuring the stability of the products for the entire shelf- life and to preventing damage to health of the consumers. Currently, the number of accepted substances for microbial stabilization is limited due to legal restrictions or public discussion.
In addition to legal requirements, the options for microbial stabilization are restricted by marketing demands. The movement to preservative-free or natural products and restrictions on certain actives, i.e. formaldehyde-donors, isothiazolinones, etc., are increasing.