Lincoserve™ is a globally approved liquid preservative system composed of Phenoxyethanol and Ethylhexylglycerin, designed to provide broad-spectrum antimicrobial protection in cosmetic and personal care formulations. In this system, Phenoxyethanol functions as the primary antimicrobial agent, effectively inhibiting the growth of bacteria, yeast, and mold by disrupting microbial cell membranes and metabolic processes. Ethylhexylglycerin acts as a preservative booster that enhances the overall antimicrobial efficacy while also contributing mild skin-conditioning and emollient properties. Together, these ingredients form a balanced preservation system that helps maintain product safety and stability throughout shelf life and consumer use.
The preservative system demonstrates effective performance across a wide pH range, typically between pH 2 and 12, making it highly versatile for incorporation into various cosmetic bases. Its liquid form allows easy integration into formulations, and its compatibility with many raw materials supports its use in emulsions, aqueous systems, and surfactant-based products. The raw material is free from parabens, formaldehyde donors, and isothiazolinones, aligning with modern formulation trends that prioritize alternative preservation systems.
Challenge testing performed on representative formulations such as shampoos and skin care emulsions demonstrated effective microbial control when used at typical levels between 0.5% and 1.0%. In these tests, formulations preserved with Lincoserve™ showed rapid reduction of microbial counts for both bacterial and fungal contaminants compared with unpreserved controls, confirming its ability to protect cosmetic products from contamination during storage and use.
In skin care applications, this preservative system helps maintain the microbiological integrity of creams, lotions, gels, and other emulsified systems without negatively affecting the sensory profile of the formulation. In hair care products such as shampoos, conditioners, and styling treatments, it helps prevent microbial growth that could compromise product quality, odor, or performance.
Quick Insights
Ingredient Rating:
GOOD
Type of Ingredient:
Preservative
Intended Function:
Inhibit microbial growth to preserve cosmetic formulations.
Common Applications:
This ingredient can be utilized in assorted applications, including lotions, cleansers, toners, rinses, treatments, and styling solutions. It functions optimally in acidic environments and can be incorporated for routine product stability.
Target Audience:
Lincoserve KSB-45 can be added to formulations assisting individuals pursuing clean preservatives; tender dermis; natural hair solutions; extended shelf life.
Also Known As:
Sodium Benzoate and Potassium Sorbate, Benzoate-Sorbate Preservative System.
Safety Analysis
Lincoserve KSB-45, consisting of sodium benzoate and potassium sorbate, is recognized as safe for cosmetic use at concentrations up to 1 % by regulatory bodies like the FDA and EU, with low irritation potential confirmed in patch testing. While both components hold GRAS status and exhibit no genotoxic or carcinogenic effects in standard dosages, caution is advised against combining with ascorbic acid under elevated temperatures to prevent benzene formation. Epidemiological data indicate minimal allergic responses, supporting its compatibility for sensitive demographics when formulated appropriately.
References
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