INCI: Lactobacillus Ferment - Also known as: Postbiotic, Lactic Acid Bacteria Ferment, Probiotic-Derived Active

QUICK FACTS

What is Lactobacillus Ferment?

Lactobacillus Ferment is a postbiotic ingredient produced through the fermentation of Lactobacillus species bacteria - the same family of lactic acid bacteria found in cultured foods like yogurt, kefir, and fermented vegetables. In skincare, the term postbiotic refers to the collection of bioactive metabolites produced by beneficial bacteria during fermentation, rather than the live bacteria themselves. This distinction matters practically: postbiotics deliver the research-associated biological activity of probiotic bacteria in a stable, shelf-life-compatible form that does not require live cultures to be maintained within the formula.

The bioactive components of Lactobacillus Ferment include lactic acid (the primary metabolite), bacteriocins (antimicrobial peptides), exopolysaccharides, enzymes, and various short-chain fatty acids. Together these metabolites are studied in connection with the skin's microbiome environment - the complex ecosystem of microorganisms that lives on the skin's surface and is increasingly researched in connection with barrier function, surface comfort, and the conditions associated with reactive or sensitized skin.

At Sweet Chemistry, Lactobacillus Ferment is formulated alongside Maltodextrin in the Elasticity Reinforcing Hydra-Cream and Lipid-Cream. Maltodextrin serves as the delivery matrix that protects and stabilizes the postbiotic metabolites during emulsification and storage, helping to ensure they are available at the skin's surface in their intended state. This two-component delivery approach reflects a considered formulation decision rather than a simple ingredient addition.

What does it do for skin?

Lactobacillus Ferment's studied contributions to skin center on its association with the skin microbiome environment and the surface conditions linked to barrier health and comfort. The skin microbiome is a complex community of bacteria, fungi, and other microorganisms that colonizes the skin's surface; research has increasingly explored the relationship between a diverse, balanced microbiome and barrier integrity, reactive responses, and overall skin surface condition. When the microbiome is disrupted - by harsh cleansing, antibiotic use, or environmental stress - changes in the skin's surface environment may follow.

Postbiotic metabolites from Lactobacillus species are studied in connection with supporting a more balanced skin surface microbiome environment - contributing signals and compounds that may favor the conditions associated with beneficial microbial communities. Lactic acid, one of the primary metabolites, is also a naturally occurring NMF component at trace levels and is studied in connection with supporting the skin's mildly acidic pH environment - the acid mantle that is important for both barrier lipid processing and the conditions that favor a balanced skin microbiome.

The exopolysaccharide fraction of Lactobacillus Ferment has been researched in connection with a more comfortable, less reactive-looking skin surface - a polysaccharide-mediated surface interaction that complements the soothing approach of bisabolol, panthenol, allantoin, and colloidal oatmeal also present in both creams.

Within Sweet Chemistry's independent clinical study of the Max Repair System, 93% of subjects reported their skin looks healthier and 89% reported more resilient-looking skin - outcomes that reflect the combined contribution of the complete formula system, including the postbiotic approach in the two cream formulas. Individual results may vary.

FOUND IN

In 2 Formulas

Lactobacillus Ferment is specific to Sweet Chemistry's two cream formulas, where it is delivered as part of a two-component postbiotic system alongside Maltodextrin. It is absent from the Hydra-Serum and Oil-Serum by design - the cream format and water activity of these two products creates the appropriate environment for postbiotic delivery.

Hydration - Dry to Normal

Elasticity Reinforcing Hydra-Cream Lactobacillus Ferment (with Maltodextrin) - 1.7 oz / 50 ml

The Hydra-Cream delivers the postbiotic system alongside 3% Matrikynes® peptides, 2% THD ascorbate, a full ceramide barrier complex, and three independent soothing actives in a 40%-active emulsion for dry to normal skin.

Hydration - Dry to Dehydrated

Elasticity Reinforcing Lipid-Cream Lactobacillus Ferment (with Maltodextrin) - 1.7 oz / 50 ml

In the Lipid-Cream, the postbiotic system contributes microbiome-associated surface balance within the most emollient formula in the lineup - designed for dry and dehydrated skin that may also present as reactive or sensitive.

WORKS TOGETHER WITH

Postbiotic Delivery Matrix Maltodextrin

INCI: Maltodextrin.

Present alongside Lactobacillus Ferment in both cream formulas as the stabilizing delivery scaffold. Synergy Note: Lactobacillus Ferment and Maltodextrin are formulated as an interdependent pair - Maltodextrin protects the postbiotic metabolites during emulsification and storage, enabling them to reach the skin surface in their intended bioactive state. These two ingredients are designed to function as a system.

Soothing Active Bisabolol

INCI: Bisabolol.

Present in both cream formulas alongside Lactobacillus Ferment as part of the three-ingredient soothing system. Synergy Note: Lactobacillus Ferment addresses the microbiome-associated dimension of skin surface balance; bisabolol is studied in connection with inflammatory mediator pathways at the cellular level. Their combined presence in both cream formulas addresses surface comfort from a microbial balance and a cellular pathway direction simultaneously.

Soothing Active Panthenol

INCI: Panthenol.

Present in both cream formulas alongside the postbiotic system. Synergy Note: Panthenol's provitamin B5 and barrier-supportive character provides a complementary soothing dimension to Lactobacillus Ferment's microbiome-associated approach - together they cover both the surface barrier and the microbiome dimensions of skin comfort.

ECM Peptide Complex Matrikynes® Bone Peptides

INCI: Hydrolyzed Cow Bone Extract.

At 3% in all four formulas, associated with improvements in the appearance of skin density and aging signs. Synergy Note: A more balanced skin surface microbiome environment - supported by the Lactobacillus Ferment postbiotic system - is associated in research with reduced surface disruption, which may create more favorable conditions for the deeper dermal-targeting activity of Matrikynes® peptides.