undisclosed possibly unsafe preservative [SEP] they are a great size and moisturizing but the reason for one star is because of the undisclosed use of the preservative polyaminopropyl biguanide and the amount of regulation ec no on cosmetic products on the basis of the data available the sccs concludes that polyaminopropyl biguanide phmb is not safe for consumers when used as a preservative in all cosmetic products and in cosmetic spray formulations up to the maximum concentration of