Hello. If you have an account, please Sign In.

0800 999 2331 07769 339007

Leucidal Liquid SF

From £9.50


Ecocert & COSMOS approved

Leucidal® Liquid SF is a probiotic-based ingredient created by the fermentation of Lactobacillus in a defined growth medium. Lactobacillus is one of the species of microorganisms used to produce fermented products, such as kimchi and sauerkraut, a Korean dietary staple, from cabbage. Like many members of the lactic acid bacteria family, Lactobacillus is capable of restricting the growth of other microorganisms by acidifying its environment. However, Lactobacillus also produces novel antimicrobial peptides, known as bacteriocins, that are capable of providing broad spectrum antimicrobial protection. During the manufacturing process, lysozyme is added to the ferment filtrate to facilitate a controlled cell lysis to ensure the release of the antimicrobial peptides for maximized activity.

A double challenge test using 2% Leucidal® Liquid SF was also conducted to evaluate the ability of the product to provide antimicrobial protection in finished formulas. A basic O/W emulsion was used as the base. The samples were inoculated with E. coli, P. aeruginosa, S. aureus, C. albicans and A. brasiliensis and incubated for 28 days. During this period, samples were periodically collected and tested for the presence of viable microorganisms. Following the initial 28 days of incubation, the samples were re-inoculated with the microbial cultures for another period of 28 days. The results confirm the ability of Leucidal to prevent the growth of the above bacteria.

Leucidal® Liquid SF can be used in a wide range of cosmetic products,
To ensure optimum results we recommend using the following guidelines.

  • Incorporate the product into formulations at a pH between 3 and 7, during the cooling phase of the process at temperatures lower than 70°C.
  • If working with with xanthan gum, other thickener or grapefruit seed extract, it is best to add this leucidal prior to the others.

If you are planning to develop and launch your own skincare range on the market, please be aware that you will need to carry out a challenge test for every product in your line.