There are no ph restrictions in formulating with Optiphen®. Optiphen® is compatible with most ingredients used in the personal care industry. (Optiphen Natural). Common Use levels of Optiphen for making LOTION + CREAMS is 0.75 - 1.5%.
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Euxyl K 903 Preservative Formulating Guidelines & Safety - Simple Pure Beauty
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16 oz. Optiphen Plus Preservative for Lotions & Creams
5.8 oz Optiphen Preservative, Oil Soluble Natural Preservative, Optiphen Suitable for Making Soap, Conditioners, Lotion, Creams and More
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Optiphen Plus Preservative – Talsen Chem
Buy Optiphen ND
Colloidal Oatmeal Body Lotion – Oatmeal Beauty
Optiphen is a natural preservative paraben and formaldehyde free. A very gentle preservative - Water soluble - Broad Spectrum You can use Optiphen in
Talsen Chemicals Optiphen Preservative (1 Oz / 30 mL) Optiphen Natural Preservative for Cosmetics Water Soluble Paraben Free Broad Spectrum