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Preservative 1388 eco plus is a modern antimicrobial ingredient designed for the preservation of cosmetic products. It uses new and sustainable technologies that enable safe preservation without the need to use traditional preservatives, which are often associated with skin irritation or negative consumer perception.
The main principle is the combination of natural organic acids, which provide effective protection against bacteria, yeasts and moulds. In the case of Preservative 1388 eco plus, this is a blend of salts of levulinic acid and anisic acid, supplemented with glycerin for better solubility.
Preservative 1388 eco plus is an aqueous solution containing the sodium salt of levulinic acid and the sodium salt of anisic acid in an optimal ratio. Glycerin acts as an auxiliary substance increasing solubility. Thanks to this, it avoids problems with the low solubility of anisic acid and allows direct and simple use in formulations.
The raw materials are of plant origin: levulinic acid from sugar cane or corn, anisic acid from star anise and glycerin from rapeseed oil. The product is 100 % natural, vegan and meets the criteria of the COSMOS and Natrue certifications. The index of natural origin (NOI according to ISO 16128) has a value of 1.0.
The effective organic acids act on microorganisms by penetrating the cell and changing its internal pH, which leads to the demise of the microorganism. Therefore, the efficacy of Preservative 1388 eco plus is pH-dependent. It achieves the best results in the range of pH 3.5 – 6.0, which is suitable for most cosmetic products.
Efficacy against microorganisms:
Since Preservative 1388 eco plus is pH-dependent, the higher the final pH of the product, the higher the dosage of the preservative should be. In the table below, we present the recommended dosage at different pH values of the final product.
Recommended dosage at different pH values:
Preservative 1388 eco plus represents a modern and sustainable approach to the preservation of cosmetics – it combines natural origin, high efficacy and simple use in formulations. Thanks to the combination of levulinic acid and anisic acid, it provides reliable antimicrobial protection that is gentle on the skin and on the environment, making it an ideal choice for both natural and conventional cosmetics.
