Preservative TCB

Preservative TCB is a specially optimized blend of triethyl citrate, caprylyl glycol, and benzoic acid. It provides broad-spectrum protection, working effectively against gram-positive and gram-negative bacteria, as well as yeasts and molds. Since the material contains benzoic acid, its antimicrobial performance is strongest at a pH below 6. However, at a higher usage level of 1.5%, it can still be effective at pH values up to 7.

Preservative TCB can be used on its own to preserve emulsions, gels, and tonics, or it can be combined with other materials in surfactant-based formulations. A solubilizer may be needed to achieve full clarity in water-rich systems. Finally, it maintains the organoleptic qualities of cosmetic products while also improving their wetting and emollient properties.

Unlike conventional preservatives that are typically added at the final stage of production, this optimized blend should be introduced into the aqueous phase at the start, prior to emulsification or the addition of surfactants to prevent potential destabilization. The material is thermally stable and can withstand hot processing conditions up to 80 °C. At low storage temperatures, the blend may become inhomogeneous due to the solidification of caprylyl glycol. However, it can be fully re-homogenized by gentle heating and mixing, without any impact on its performance.