Leucidal® SF Max Powder

Leucidal® SF Max Powder: A Natural Conditoner and Antimicrobial Active from Active Concept

https://CosmeticScientist.com and Cuross Bakhtiar

5/4/20243 min read

INCI: Lactobacillus Ferment
Use Levels: 0.50 - 1.00%
Solubility: Water Soluble
Appearance: Free Flowing Powder

Introducing Leucidal® SF Max Powder - Your Natural Formulation Solution!

In response to the evolving consumer preferences in the personal care industry, we bring you Leucidal® SF Max Powder, the perfect answer to the growing demand for natural products in formulations. Embodying the concept of "less is more," this powdered version of Leucidal Liquid SF Max is a game-changer for formulators.

Experience Unmatched Potency: Leucidal® SF Max Powder is not only more effective but also five times more concentrated than the original. This powerful boost in potency not only saves valuable formulation time but also delivers superior efficacy, instilling a higher level of confidence in your products.

Backed by Cutting-edge Science: Leucidal® SF Max Powder is a probiotic-based ingredient crafted through the fermentation of Lactobacillusin a precisely defined growth medium. Derived from microorganisms used in producing revered fermented foods like kimchi and sauerkraut, Lactobacillusbrings its natural prowess to the personal care realm.

Broad Spectrum Protection: Along with acidifying its environment to restrict the growth of other microorganisms, Lactobacillus goes the extra mile by producing novel antimicrobial peptides called bacteriocins. These peptides provide your products with broad spectrum antimicrobial protection.

Maximized Activity: Our manufacturing process involves adding lysozyme to the ferment filtrate, ensuring a controlled cell lysis that maximizes the release of antimicrobial peptides, unleashing their full potential.


A 24-hour skin moisturization study was performed involving 20 M/F participants between the ages of 23-45. Using an untreated control, generic cream base, and an experimental with the same cream base containing 0.5% and 1.0% Leucidal® SF Max Powder, moisturization readings were taken and compared. Results from this study are shown below in Figure 1. A Dermalab Corneometer was used to measure moisture levels, in μSiemens (μS), as the presence of moisture in the skin improves conductance. Therefore, the higher the conductance measurements, the higher the moisture levels.

As demonstrated by the results of this study, Leucidal® SF Max Powder showed high moisturizing capabilities at both concentrations of 0.5% and 1.0%. Please note, each value is an average of three consecutive readings per test site. Based on these results, adding this innovative product provides the formulator the opportunity to capitalize on both the natural antimicrobial properties of Leucidal® SF Max Powder, as well as its ability to provide potent moisturizing benefits to the cosmetic formulation.

Leucidal® SF Max Powder can more effectively inhibit the growth of a variety of bacteria and fungi than its liquid version, Leucidal® SF Max. The powder version is about five times more concentrated. Therefore, better results are acheived while also using less product.

MIC Results

The Minimum Inhibitory Concentration (MIC) test shows comparative results between the two ingredients and shows that both materials provide broad-spectrum antimicrobial protection. The positive MIC screening results warranted further testing to confirm its ability to provide product preservation.

Challenge Test

Double Challenge Tests were completed using 1.0% Leucidal® SF Max Powder in the water phase of a generic base lotion formula. Samples were inoculated with E. coli, P. aeruginosa, S. aureus, C. albicans, and A. brasiliensis.

Time Kill

A Time Kill Test was performed to determine the change in population of aerobic microorganisms within a specified sampling time when tested against 1.0% Leucidal® SF Max Powder solution. The activity of the test material inoculated was evaluated at determined time intervals of 30 seconds, 1, 5, 10 and 30 minutes after the inoculation to determine quantitatively the number of viable microorganisms remaining after the incubation time. As shown in Figure 4, the gram-positive and gram-negative bacteria as well as the yeast and mold were reduced by 99.9% within 30 seconds after the inoculation

Use Recommendations

Leucidal® SF Max Powder can be used in a wide range of cosmetic products; however, to ensure optimum results we recommend using the following guidelines. Incorporate the product into formulations at a pH between 3 and 7 during the aqueous phase of the process at temperatures lower than 70°C.

Storage: Store in a dry place at temperatures not exceeding 32°C. Based on stability studies, the optimum storage temperature for maximization of shelf life is 23 - 25°C. However, it may be stored at temperatures between 16 and 32°C if such specific temperature control is not available. Do not freeze. Please refer to stability data for effects heat or cold may have on the specifications of the product.

Shelf life: 12 months, properly stored, in sealed container. 

This product should be added to a formulation at the recommended usage rate.

Buy at Formulators Sample Shop https://www.formulatorsampleshop.eu/products/leucidal-sf-max-powder-fssm16008.php

Written by Cuross Bakhtiar at CosmeticScientist.com