Optiphen Plus is a paraben- and formaldehyde-free preservative system that is ideal for products with a lower pH systems. 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. Optiphen Plus performs best in formulations below 6.0 pH. Depending on the formulation, Optiphen Plus has also been proven effective at pH levels above 6.0. This preservative is effective as a stand-alone system and functions well with other preservatives. Optiphen Plus has an extensive range of applications in aqueous and emulsion-type personal care formulations and is compatible with most raw materials in the personal care industry.
Optiphen Plus preservative should be used in cosmetic products at concentrations in the range of 0.75% to 1.5%. For the preservation of simplesurfactant products a dose of 0.5% might be sufficient. For the determination of optimum dosage they recommend a preservation test, as the efficacy of this preservative is highly influenced by the product matrix.
INCI: Phenoxyethanol (and) Caprylyl Glycol (and) Sorbic Acid.