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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.

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