Optiphen: Preservatives are essential to cosmetic formulations because they kill germs that can make you and your customers very sick. If you are making your own cosmetic formulations, you want to ensure that your products are safe and germ-free. Optiphen is a liquid, paraben-free and formaldehyde-free preservative used in aqueous formulations, anhydrous formulations, and in emulsions. Optiphen is a globally approved preservative system created by ISP consisting of Phenoxyethanol and Caprylyl Glycol. A true, multi-functional ingredient, caprylyl glycol also acts as a humectant and wetting agent in cosmetic and skin care formulations in addition to providing viscosity modification in some formulations. This makes Optiphen more than just a preservative. Optiphen not only provides broad spectrum preservation against bacteria, yeast and mold, the presence of caprylyl glycol imparts an exceptional feel to the finished formulation making it useful in creams, sunscreens, lotions, color cosmetics, body washes and shampoo applications.
Optiphen is easy to use since it is in liquid form, and can be directly added to a fomulation during pre or post emulsification phase below 140F (60C). If you add Optiphen to your product at above 140F (60C), it is highly likely that the heat will destroy much of the preserving qualities of the Optiphen. Therefore, we suggest adding Optiphen to your formulation at around 120F just to be safe. However, if optiphen is added to an emulsion at too low of a temperature, the emulsion may become unstable, and you will see the oil and water phase begin to separate. Optiphen is compatible with most raw ingredients used in the cosmetic industry. Usage rate is .75%- 1.5% of your formulation.
INCI Name: Phenoxyethanol and Caprylyl Glycol