Optiphen Plus Preservative is a broad-spectrum preservation system designed for use in cosmetic formulations, lotions, serums, and other DIY personal care products. This 1 ounce (30 mL) bottle contains a paraben-free and formaldehyde-releaser-free blend that helps protect water-based formulations from microbial growth, extending the shelf life of homemade products. The preservative is formulated with phenoxyethanol, caprylyl glycol, and sorbic acid, which work together to inhibit bacteria, yeast, and mold. It is suitable for use in oil-in-water emulsions, surfactant-based systems, and anhydrous formulations, though it is most effective in products with a pH range of 4.5 to 5.5. Optiphen Plus can be added during the cool-down phase of production, typically at temperatures below 40°C (104°F), to maintain stability and efficacy.

This preservative is intended for formulators and DIY enthusiasts who require a reliable, easy-to-use option for protecting their cosmetic creations. It is compatible with a wide variety of ingredients, including plant-based oils, butters, and botanical extracts, making it a versatile choice for natural-leaning formulations. The gentle profile of the blend makes it appropriate for leave-on and rinse-off products such as creams, lotions, serums, shampoos, and body washes.

Users should follow recommended usage rates, typically between 0.5% and 1.5% of the total formula weight, and conduct appropriate challenge testing to confirm preservation efficacy for specific formulations. The product is supplied in a convenient dropper bottle for precise measurement and easy incorporation into small-batch production. Regular quality control and proper storage in a cool, dry place are advised to maintain the preservative's performance over time.