What preservative do you use?Updated a year ago
Optiphen PLUS.
Optiphen Plus is a paraben- and formaldehyde-free preservative system that is ideal for products with a lower pH system. Optiphen Plus is an ISP patent-pending liquid preservative formulation featuring an innovative blend of phenoxyethanol, sorbic acid, and an emollient base that is ideal for slightly acidic personal care products requiring broad-spectrum protection.
The combination of all three ingredients offers effective protection against bacteria, yeast, and mold growth while imparting emolliency.